Triumph TR5 Specs

The TR5 PI and the TR250 side by side: one body, one frame and one six-cylinder engine, fed by injection or by carburettors. Every figure here is as a factory brochure, a road test or a club recorded it, and where they disagree the tables say so.

A left-hand-drive TR5 PI with its hood (soft top) folded and its wheel trims missing, at the Nationaal Oldtimer Festival in Zandvoort, the Netherlands, on 27 September 2009.AlfvanBeem, CC0

The TR5 PI and the TR250 were one car with two fuel systems. They shared the TR4A's body and its separate frame with independent rear suspension, and the same six-cylinder engine; the TR5 PI had Lucas petrol (fuel) injection and higher compression, and the TR250 two carburettors, lower compression and the TR4A's axle.

The comparison sets the two side by side, values only. Each value is the better-supported reading; a small asterisk beside one opens a note with the other figures in print and who gives them, and the "i" by each table lists its sources. The sections below explain the figures that need it, and give in tables the details the comparison does not hold.⁠source 1source 2source 3source 4

Engine

The six is cast iron, block and head, with four main bearings and pushrod-operated valves. Its bore and stroke and its capacity are in the comparison; the TR250's differs from the TR5's in what it breathed through, how hard it was pressed and its camshaft, and Chris Harvey writes that the heads' ports differ too.

Item	TR5 PI	TR250
Fuel system	Lucas Mk II petrol injection	Two Zenith-Stromberg carburettors, the mixture sealed
Camshaft	280°, by the German TR Register	256°, by the same guide
Coil	Lucas HA12	Lucas HA12
Plugs	Champion N9Y	Champion N12Y
Firing order	1-5-3-6-2-4	–
Thermostat	Opens at 82 °C	The same
Charging	An alternator, 28 A at most, by tr5passion.com	A Lucas 15AC alternator with a separate 4TR regulator
Battery	12 V, 57 Ah, under the bonnet (hood)	A C9 in Britain, a CZ9 in the United States
Fuel	5-star (super-premium, by Severson's account)	–

tr5passion.com gives the TR5's ignition details, and the Vintage Triumph Register (VTR) the TR250's. How the injection works is on the TR5 PI page.⁠source 2source 5source 6source 3source 1source 4source 7

The engine bay of a white car with the bonnet raised: a six-cylinder engine with a long black inlet plenum and six short intake pipes. — The injected six as the TR5 PI's specification describes it: the plenum and three twin throttle bodies of the Lucas system in an undated photograph; the chromed rocker cover is later.Jbattersby, Public domain

Contents

Power and torque, every reading with its basis

Triumph quoted one power figure for the TR5, and Motor Sport printed it as quoted:

With this system, the TR5's engine produces a quoted 150 b.h.p. at 5,500 r.p.m.

D. C. N., Motor Sport, August 1968

No period source read says on what basis it was measured, and the factory's own Italian brochure of October 1967 gives no power figure at all. The other readings are later. Aaron Severson gives a lower figure, which he calls net. A German guide from the TR Register in Germany says that German registration papers gave a figure in PS, the metric horsepower. And the same engine was later rated lower in brochures for the TR6 PI, as Motor Sport reported in 1973; that is a rating of the TR6, not of the TR5. The comparison leads with Triumph's figure, and its note gives the others with their sources.

The TR250's engine has two figures in print, and Severson explains them: the lower is net and the higher gross, and the same goes for its torque. The clubs print one of the two power figures, at the same engine speed, without saying which. The TR5's torque, Triumph's figure, is the same in Motor Sport's show report of 1967, its test of 1968 and the TR Register's facts; Wikipedia gives a lower engine speed for its peak, which no other source read supports.

The engine bay of a red car: a six-cylinder engine with a chromed rocker cover, blue plug leads and two carburettors behind. — The engine with the lower ratings: a TR250's six with its two Zenith-Stromberg carburettors, on 8 April 2012; the chromed rocker cover and battery are later.Steve Dawson, CC BY-SA 2.0

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Transmission

The gearbox (transmission) had four speeds, all with synchromesh, and a diaphragm-spring clutch worked hydraulically. Laycock de Normanville's A-type overdrive was an option, working on second, third and top; a car built with it carries O in its commission number. The TR250 kept the TR4A's axle, lower geared than the TR5's.⁠source 2source 1source 5source 6source 4

Item	Reading	Source
Gearbox ratios	3.14, 2.01, 1.33 and 1.00:1; reverse 3.22:1	Motor Sport, 1968; the Italian brochure
Overall ratios, TR5 PI	10.83, 6.94 and 4.59:1 in first to third; reverse 11.11:1	The Italian brochure
Overdrive ratios	1.64:1 in second, 1.08:1 in third, 0.819:1 in top	tr5passion.com
Clutch	8½ in, diaphragm spring, hydraulic	Motor Sport, 1968; the German guide

Close-up of a dark green boot with chrome TRIUMPH, OVERDRIVE and TR5 PI badges beside a tail lamp and reversing lamp. — The OVERDRIVE badge beside TRIUMPH and TR5 PI on the boot (trunk) lid of a TR5 PI with the optional overdrive, at the Silverstone Classic on 26 July 2014.Draco2008, CC BY 2.0

Contents

Chassis, suspension, steering, brakes

The frame is the TR4A's: in the Italian brochure's words, box-section side members braced by a cross ("lungheroni laterali a sezione scatolare rinforzati da un tirante a croce"). At the front were unequal double wishbones, coil springs and telescopic dampers, and no anti-roll bar: Severson calls the TR6's the first on a production TR, and the factory's own description of the TR5 has none (TR5 vs TR6 answers the story that it had one). At the back, semi-trailing arms and coil springs worked with lever-arm dampers, which the brochure calls piston-type. Motor Sport's "co-axial coil-spring/damper units" for the rear, in its test of 1968, is a slip: the factory and the TR Register both describe lever-arm dampers. The rear springs were stiffer than the TR4A's.

Steering was by rack and pinion. Motor Sport counted 3¼ turns from lock to lock and tr5passion.com gives 3½, and the brochure's figure is too blurred to settle it; the brochure's three-spoke steering wheel was 41 cm across, a little more than tr5passion.com gives. The turning circle was 10.1 m between kerbs by the brochure and 33 ft by the VTR. The brakes had a servo and, as Motor Sport reported from the 1967 show, tandem master cylinders; their sizes are in the comparison. The TR250 had a brake-failure warning, as the left-hand-drive TR5 did by the brochure, and added a brace for the steering rack and a second stud on each front lower wishbone (TR250).⁠source 1source 2source 8source 9source 4source 6source 3

A rusty bare chassis frame on its wheels in a yard, with the six-cylinder engine, gearbox and rear suspension still fitted. — A bare frame that its uploader describes as a TR6's, in a yard on 20 May 2008, with the six, the gearbox and the independent rear suspension still in place: the TR6 kept the TR5's frame, but this one is not a TR5's.dave_7, CC BY-SA 2.0

Contents

Wheels and tyres

Steel disc wheels with Rostyle-style covers were standard on both cars, and 60-spoke wire wheels an option. The TR5's radials were Michelin XAS or Dunlop SP41 by the factory's brochure, and Motor Sport's test car ran on XAS. The TR250's were wider, and the VTR and Severson give them different speed ratings; the comparison's note gives both. tr5passion.com gives the TR5's tyre pressures as 1.54 kg/cm² at the front and 1.82 at the back, and adds that a hardtop car weighed about 25 kg more than an open one.⁠source 1source 2source 3source 4source 6source 12

A pale blue sports car with a matching hardtop seen from behind on a show stand, its badges and twin exhausts in view. — The TR5 PI's steel wheels with their trims, on a hardtop car that won a prize at the Classic Motor Show, NEC Birmingham, on 9 November 2018.andreboeni, CC BY 2.0

Contents

Dimensions, weights and capacities

The comparison gives the length, width, wheelbase, height, ground clearance, weights and fuel tank. The Italian brochure gives more, and the TR250's tracks come from the VTR:

Item	Reading	Source
Track, front and rear, disc wheels	1,251 and 1,239 mm	The Italian brochure
Track, front and rear, wire wheels	1,263 and 1,251 mm	The Italian brochure
Track, front and rear, TR250	49.25 and 48.75 in on disc wheels; 49.75 and 49.25 in on wire	The VTR
Height to the top of the windscreen (windshield)	1,170 mm	The Italian brochure
Height with the hood (soft top) folded and the windscreen off	1,020 mm	The Italian brochure
Boot (trunk)	1,180 mm wide and 510 mm long at most	The Italian brochure
Gross weight	1,226 kg	The Italian brochure
Maximum weight	24½ cwt	Motor Sport, 1968
Engine oil	4.52 L	The Italian brochure
Gearbox oil	1.13 L without overdrive; 2 L with it	The Italian brochure; tr5passion.com
Rear axle oil	0.85 L, or 1.41 L	The Italian brochure; tr5passion.com
Cooling system, with heater	6.2 L	The Italian brochure

The TR5's weights in the comparison are the brochure's, and it says what each includes: the dry weight is without extras, and the kerb weight with tools, fuel, oil and water. The two figures for the rear axle's oil disagree, and no source read settles them.

Contents

Performance

Triumph claimed a top speed for the TR5 at the 1967 show, and its Italian brochure gave the same in kilometres an hour, with a second, lower figure blurred on the page; the comparison gives the claim. The brochure also claimed 6.5 seconds from rest to 80 km/h, and in top gear 7 seconds from 48 to 80 km/h, 7 from 64 to 96 and 8 from 96 to 128; tr5passion.com adds 30 seconds for the standing kilometre.

Of the period road tests, only Motor Sport's has been read in full. It recorded 21.8 mpg (imperial) over its test, between 17 and 25 mpg as it was driven, and its acceleration figures, which are not in the archive's text, beat the factory's:

When we took our acceleration figures a high and very changeable wind was blowing, and this may explain why our figures were slightly better than those which the manufacturers claim.

D. C. N., Motor Sport, August 1968

The figures from Motor, Cars & Car Conversions and Sports Car World reach us only through Wikipedia (road tests). The TR Register and the TR Drivers' Club each print a time from rest to 60 mph without naming a test, and the two differ; the comparison gives both. For economy the TR Register gives the TR5 19.6 mpg and the TR Drivers' Club 22.5, neither saying which gallon; for the TR250 the TR Register gives 27.5 mpg and the TR Drivers' Club 25, again without saying, and the VTR 23.5 US mpg.⁠source 8source 1source 2source 9source 14source 3source 6

Contents

Colours and trim

The TR5 and TR250 were offered in the same colours, and the list rests on the VTR and tr5passion.com:

Paint, with its code	Trim
New White (19)	Black; Matador Red
Conifer, Triumph Racing Green (25)	Black; Matador Red; Light Tan
Wedgwood Blue (26)	Black; Midnight Blue
Signal Red (32)	Black
Jasmine Yellow (34)	Black; Light Tan
Royal Blue (56)	Black; Shadow Blue
Valencia Blue (66)	Black; Light Tan; Shadow Blue
Black	Black; Matador Red; Light Tan

Black was available on the TR250, both sources say, and the VTR adds that it may have been offered, very rarely, on the TR5. tr5passion.com suggests that other colours from Triumph's chart may have been used, especially on the Belgian-assembled cars. The seats were in Ambla, with leather an option that was rarely ordered; the hood was black or white, the hardtop black, white or the body colour, and the Surrey top's fabric black or white (Surrey top). The dashboard was in wood with a dull finish, which Motor Sport's tester disliked.⁠source 3source 6source 4source 2

The cockpit of a teal open car seen from behind: a wooden dashboard, a wood-rimmed wheel and tan seats behind a cream hood cover. — The wooden dashboard and its gauges in a right-hand-drive TR5 at Classic Motor Days, Hungriger Wolf airfield, Hohenlockstedt, Germany, on 28 May 2016; the wood-rimmed wheel and the rugs are later.Nightflyer, CC BY 4.0

Contents

Production

Sources for Production, by version

Price new: TR5 PI: Several figures in print.Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4; Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; TR250: Several figures in print.Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, March 1968, Mar 1968 (vol. 14 no. 3)⁠source 15; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4
Built: TR5 PI: Several figures in print.Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3; Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion⁠source 6; Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 16; TR250: Several figures in print.Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3; Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 16
Built at: TR5 PI: Several figures in print.Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion⁠source 6; Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 16; TR250: One good source."built at Canley" (production table heading). Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 16

Production, by version
Item	TR5 PI	TR250
Price new	£1,212 5s 5d Price new, TR5 PI Several figures in print. £1,212 5s 5dGood sources agree: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, with purchase tax, at launch⁠source 4 £1,212 8s 1dGood sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26, soft top, with purchase tax (the verdict prints 8s 11d)⁠source 2 £1,212Good sources agree: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), soft top, printed as "Basic Price"⁠source 9 £1,255 9s 4dGood sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26, hard top, with purchase tax⁠source 2 £1,255Good sources agree: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), hard top, printed as "Basic Price"⁠source 9 £1,260 13s 11dOne good source: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, with purchase tax, spring 1968 (£985 basic)⁠source 4	$3,175.00 Price new, TR250 Several figures in print. $3,175.00Good sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, March 1968, Mar 1968 (vol. 14 no. 3), "Suggested Retail Price P.O.E. East Coast", plus $50.00 pre-delivery inspection; Mar 1968⁠source 15; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), soft top, East Coast; printed as "Basic Price"⁠source 9 $3,395One good source: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, POE New York, at launch⁠source 4
Built	29 Aug 1967 (CP2, start) Built, TR5 PI Several figures in print. 29 Aug 1967 (CP2, start)Good sources agree: Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register, CP2, "the first production Tr5"⁠source 3; Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion, "CP 1 : First TR5 (prototype)"⁠source 6; Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 16 19 Sep 1968 (CP3101, end)Good sources agree: Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3; Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion⁠source 6; Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 16	11 Jul 1967 (CD1, start) Built, TR250 Several figures in print. 11 Jul 1967 (CD1, start)Good sources agree: Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3; Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 16 19 Sep 1968 (CD8594L, end)Good sources agree: Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3 19 Sep 1968 (CD8594, end)Good sources agree: Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 16
Built at	Canley Built at, TR5 PI Several figures in print. CanleyGood sources agree: Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion, "The majority of TR5s were assembled in Canley (UK)"⁠source 6; Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1, "built at Canley" (production table)⁠source 16 Malines (Mechelen), BelgiumOne good source: Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion, left-hand-drive cars assembled from CKD kits, numbered "1CP ... LP"⁠source 6	Canley

Contents

Engine

Sources for Engine, by version

Capacity: TR5 PI: Good sources agree.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; TR250: Good sources agree.74.7 × 95 mm. TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: Standard-Triumph TR4, TR5/TR250 – 'die Michelotti Autos'", TR-Register Deutschland, 2009, 13 pp. (PDF)⁠source 5
Bore × stroke: TR5 PI: Good sources agree.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2
Compression ratio: TR5 PI: Good sources agree.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; TR250: Good sources agree.Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: Standard-Triumph TR4, TR5/TR250 – 'die Michelotti Autos'", TR-Register Deutschland, 2009, 13 pp. (PDF)⁠source 5
Fuel system: TR5 PI: Several figures in print.Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4
Carburettors: TR250: Several figures in print.Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9

Engine, by version
Item	TR5 PI	TR250
Capacity	2498 cc	2498 cc
Bore × stroke	74.7 × 95 mm	Not in the sources read
Compression ratio	9.5:1	8.5:1
Fuel system	Lucas petrol injection Fuel system, TR5 PI Several figures in print. Lucas petrol injectionGood sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26, "the use of a Lucas fuel-injection system"⁠source 2 Lucas Mk II mechanical petrol injectionGood sources agree: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4	Not in the sources read
Carburettors	Not in the sources read	two Zenith-Stromberg 175CD (175CDSE, mixture sealed) Carburettors, TR250 Several figures in print. two Zenith-Stromberg 175CD (175CDSE, mixture sealed)Good sources agree: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4 twin StrombergGood sources agree: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9

Contents

Performance

Sources for Performance, by version

Power: TR5 PI: Several figures in print.Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; Motor Sport, "A selection of new models" (Earls Court show), Nov 1967, p. 39⁠source 8; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: Standard-Triumph TR4, TR5/TR250 – 'die Michelotti Autos'", TR-Register Deutschland, 2009, 13 pp. (PDF)⁠source 5; Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion⁠source 6; TR250: Several figures in print.Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; TR Drivers Club, "The TR5/250"⁠source 14; Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3; Motor Sport, "A–Z of Classic Sporting Cars 1950–1975", Oct 1996, p. 80⁠source 17
Torque: TR5 PI: Several figures in print.Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; Motor Sport, "A selection of new models" (Earls Court show), Nov 1967, p. 39⁠source 8; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion⁠source 6; TR250: Several figures in print.Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9
Top speed: TR5 PI: Several figures in print.Motor Sport, "A selection of new models" (Earls Court show), Nov 1967, p. 39⁠source 8; Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4; TR250: Good sources disagree.TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; Motor Sport, "A–Z of Classic Sporting Cars 1950–1975", Oct 1996, p. 80⁠source 17
0–60 mph: TR5 PI: Good sources disagree.TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; TR Drivers Club, "The TR5/250"⁠source 14; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4; TR250: One good source.Test not named. TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; TR Drivers Club, "The TR5/250"⁠source 14
Standing start: TR5 PI: Several figures in print.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; James Taylor, Triumph TR, Windrow & Greene, Classics in Colour 9, 1994⁠source 18; TR250: Good sources disagree.TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3

Performance, by version
Item	TR5 PI	TR250
Power	150 bhp Power, TR5 PI Several figures in print. 150 bhpGood sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26, quoted, at 5,500 rpm; basis not stated⁠source 2; Motor Sport, "A selection of new models" (Earls Court show), Nov 1967, p. 39, claimed at the Earls Court show, at 5,500 rpm⁠source 8; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), basis not stated⁠source 9 142 bhpOne good source: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, net⁠source 4 143 PSOne good source: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: Standard-Triumph TR4, TR5/TR250 – 'die Michelotti Autos'", TR-Register Deutschland, 2009, 13 pp. (PDF), German registration papers⁠source 5 150 cv DIN (165 cv SAE)Not yet confirmed: Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion⁠source 6	104 bhp Power, TR250 Several figures in print. 104 bhpGood sources agree: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), at 4,500 rpm; basis not stated⁠source 9; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, net⁠source 4; TR Drivers Club, "The TR5/250", basis not stated⁠source 14; Motor Sport, "A–Z of Classic Sporting Cars 1950–1975", Oct 1996, p. 80⁠source 17 111 bhpGood sources agree: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, gross⁠source 4; Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register, at 4,500 rpm; basis not stated⁠source 3
Torque	164.2 lb ft Torque, TR5 PI Several figures in print. 164.2 lb ftGood sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26, quoted as 1,970 lb in, at 3,500 rpm⁠source 2 164 lb ftGood sources agree: Motor Sport, "A selection of new models" (Earls Court show), Nov 1967, p. 39, at 3,500 rpm, at the Earls Court show⁠source 8; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), at 3,500 rpm⁠source 9 23.4 mkgOne good source: Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion, at 3,500 rpm⁠source 6	143 lb ft Torque, TR250 Several figures in print. 143 lb ftGood sources agree: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), at 3,000 rpm; basis not stated⁠source 9; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, net⁠source 4 152 lb ftOne good source: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, gross⁠source 4
Top speed	125 mph Top speed, TR5 PI Several figures in print. 125 mphGood sources agree: Motor Sport, "A selection of new models" (Earls Court show), Nov 1967, p. 39, Triumph's claim at the Earls Court show⁠source 8; Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT, Triumph's claim; the range's lower figure is blurred on the page (probably 185)⁠source 1 117 mphOne good source: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), performance table; test not named⁠source 9 close to 120 mphOne good source: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, with overdrive⁠source 4	109 mph Top speed, TR250 Good sources disagree. 109 mphDisputed: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), performance table; test not named⁠source 9 107 mphDisputed: Motor Sport, "A–Z of Classic Sporting Cars 1950–1975", Oct 1996, p. 80⁠source 17
0–60 mph	8.8 s 0–60 mph, TR5 PI Good sources disagree. 8.8 sDisputed: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), performance table; test not named⁠source 9 8.1 sDisputed: TR Drivers Club, "The TR5/250", test not named⁠source 14 around 8 sDisputed: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4	10.6 s
Standing start	16.5 s Standing start, TR5 PI Several figures in print. 16.5 sOne good source: Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT, standing quarter mile; factory claim⁠source 1 16.8 sNot yet confirmed: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), standing quarter mile; test not named⁠source 9; James Taylor, Triumph TR, Windrow & Greene, Classics in Colour 9, 1994, standing quarter mile at 82 mph; the test is not named⁠source 18	17.8 s Standing start, TR250 Good sources disagree. 17.8 sDisputed: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), standing quarter mile; test not named⁠source 9 18.5 sDisputed: Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register, standing quarter mile⁠source 3

Contents

Running gear

Sources for Running gear, by version

Overdrive: TR5 PI: Several figures in print.Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: Standard-Triumph TR4, TR5/TR250 – 'die Michelotti Autos'", TR-Register Deutschland, 2009, 13 pp. (PDF)⁠source 5; Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion⁠source 6; TR250: Several figures in print.Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: Standard-Triumph TR4, TR5/TR250 – 'die Michelotti Autos'", TR-Register Deutschland, 2009, 13 pp. (PDF)⁠source 5; Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3
Front brakes: TR5 PI: Several figures in print.Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion⁠source 6; TR250: Several figures in print.Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4
Rear brakes: TR5 PI: Several figures in print.Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion⁠source 6
Front suspension: TR5 PI: Several figures in print.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4; TR250: Good sources agree.The TR6's was "the first on a production TR". Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4; Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1)⁠source 19
Rear suspension: TR5 PI: Several figures in print.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9
Tyres: TR5 PI: Several figures in print.TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4; TR250: Good sources disagree.TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9; Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3; Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4
Wheels: TR5 PI: Several figures in print.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; TR250: Several figures in print.Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9

Running gear, by version
Item	TR5 PI	TR250
Overdrive	Laycock A-type on 2nd, 3rd and top Overdrive, TR5 PI Several figures in print. Laycock A-type on 2nd, 3rd and topGood sources agree: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: Standard-Triumph TR4, TR5/TR250 – 'die Michelotti Autos'", TR-Register Deutschland, 2009, 13 pp. (PDF), optional⁠source 5 Laycock overdrive on 2nd, 3rd and topGood sources agree: Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion, optional⁠source 6	Laycock A-type on 2nd, 3rd and top Overdrive, TR250 Several figures in print. Laycock A-type on 2nd, 3rd and topOne good source: Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: Standard-Triumph TR4, TR5/TR250 – 'die Michelotti Autos'", TR-Register Deutschland, 2009, 13 pp. (PDF), optional, TR5 and TR250⁠source 5 Laycock overdrive, factory ("O" suffix) or dealer-fittedOne good source: Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register, optional⁠source 3
Front brakes	10⅞ in discs Front brakes, TR5 PI Several figures in print. 10⅞ in discsGood sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26, servo standard ("A large servo"); tandem master cylinder⁠source 2 27.62 cm discsGood sources agree: Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion⁠source 6	servo standard; PDWA brake-failure warning Front brakes, TR250 Several figures in print. servo standard; PDWA brake-failure warningGood sources agree: Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3 servo standardGood sources agree: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4
Rear brakes	9 × 1¾ in drums Rear brakes, TR5 PI Several figures in print. 9 × 1¾ in drumsGood sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2 22.9 cm drumsGood sources agree: Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion⁠source 6	Not in the sources read
Front suspension	double wishbones, coil springs, telescopic dampers Front suspension, TR5 PI Several figures in print. double wishbones, coil springs, telescopic dampersGood sources agree: Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT, no anti-roll bar listed⁠source 1; TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), no anti-roll bar listed⁠source 9 no anti-roll barGood sources agree: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, the TR6's was "the first on a production TR"⁠source 4	no anti-roll bar
Rear suspension	semi-trailing arms, coil springs, piston-type (lever-arm) dampers Rear suspension, TR5 PI Several figures in print. semi-trailing arms, coil springs, piston-type (lever-arm) dampersGood sources agree: Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1 semi-trailing arms, coil springs, lever-arm dampersGood sources agree: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9	Not in the sources read
Tyres	165 x 15 Tyres, TR5 PI Several figures in print. 165 x 15Good sources agree: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), TR5⁠source 9 Dunlop SP41 or Michelin XASGood sources agree: Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT, the data panel's tyre line⁠source 1 Michelin XAS on 4½J 15-in. rimsGood sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26, the test car⁠source 2 165HR15One good source: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4	185 × 15 Tyres, TR250 Good sources disagree. 185 × 15Good sources agree: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9 185HR15, Goodyear G800 or Michelin X, redlineDisputed: Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3 185SR-15 GoodyearDisputed: Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012⁠source 4
Wheels	4½J × 15 steel disc Wheels, TR5 PI Several figures in print. 4½J × 15 steel discGood sources agree: Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1 4½J 15-in.Good sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2	4.5 × 15 steel, Rostyle-style covers; 60-spoke wire wheels optional Wheels, TR250 Several figures in print. 4.5 × 15 steel, Rostyle-style covers; 60-spoke wire wheels optionalGood sources agree: Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3 4.5JGood sources agree: TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide")⁠source 9

Contents

Dimensions and weight

Sources for Dimensions and weight, by version

Length: TR5 PI: Several figures in print.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; TR250: One good source.Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3
Width: TR5 PI: Several figures in print.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; TR250: One good source.Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3
Height: TR5 PI: Several figures in print.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; TR250: One good source.Top up. Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3
Kerb weight: TR5 PI: Good sources agree.Complete, with tools, fuel, oil and water. Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: Standard-Triumph TR4, TR5/TR250 – 'die Michelotti Autos'", TR-Register Deutschland, 2009, 13 pp. (PDF)⁠source 5; TR250: Several figures in print.Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3; Wikipedia (EN), "Triumph TR5", 2026⁠source 13
Wheelbase: TR5 PI: Several figures in print.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; TR250: One good source.Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3
Ground clearance: TR5 PI: One good source.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; TR250: One good source.Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3
Fuel tank: TR5 PI: Good sources agree.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2; TR250: One good source.Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3
Dry weight: TR5 PI: Several figures in print.Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1; Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2

Dimensions and weight, by version
Item	TR5 PI	TR250
Length	3902 mm Length, TR5 PI Several figures in print. 3902 mmGood sources agree: Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1 12 ft 9⅝ inGood sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2	153.6 in
Width	1470 mm Width, TR5 PI Several figures in print. 1470 mmGood sources agree: Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1 4 ft 10 inGood sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2	58 in
Height	1270 mm Height, TR5 PI Several figures in print. 1270 mmGood sources agree: Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT, hood up⁠source 1 4 ft 2 inGood sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26, hood up⁠source 2	50 in
Kerb weight	1034 kg	2277 lb Kerb weight, TR250 Several figures in print. 2277 lbOne good source: Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register⁠source 3 2350 lbNot yet confirmed: Wikipedia (EN), "Triumph TR5", 2026⁠source 13
Wheelbase	2240 mm Wheelbase, TR5 PI Several figures in print. 2240 mmGood sources agree: Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT⁠source 1 7 ft 4 inGood sources agree: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26⁠source 2	88 in
Ground clearance	152 mm	6 in
Fuel tank	51 L	13.5 US gal
Dry weight	983 kg Dry weight, TR5 PI Several figures in print. 983 kgOne good source: Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT, dry, without extras⁠source 1 19¼ cwtOne good source: Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26, dry⁠source 2	Not in the sources read

Contents

Sources

Sources are given as plain text; their addresses are on the sources page.

Primarymade at the time, by the maker or by people who were there
Referenceserious later work: clubs, specialists, magazines, books
Uncheckedencyclopaedias and enthusiast sites: cited beside a good source, named in the sentence, or marked Unchecked

Standard-Triumph, Nuova Triumph TR5 PI (fold-out sales brochure), Italy, Oct 1967, ref. 387/1067/IT, data panel; data panel, battery; data panel, ratios; data panel, frame, suspension and steering; data panel, wheels and tyres; data panel, performance; data panel, page image n4. Primary
Doug Nye ("D. C. N."), "Road Test Report on a Sports Car: The Fuel-Injection Triumph TR5 PI", Motor Sport, Aug 1968, p. 26, p. 26, the specification panel; p. 26, the specification paragraph; p. 26, the gearbox; p. 26, brakes, suspension and steering; p. 26, the tyres and wheel trims; p. 26, consumption and acceleration; p. 26, the dash; Aug 1968 p. 26, data panel; Aug 1968 p. 26, text. Primary
Drew Holliday, "Triumph TR250 Production Information" (8 pp. PDF), Vintage Triumph Register, p. 2, TR250 specification; pp. 2–4, electrics; p. 2; p. 2, turning circle; TR250 safety items; p. 2, wheels and tyres; p. 2, TR250 consumption; pp. 5–6, colours and trim; p. 1, span list; options; p. 7; pp. 2-3. Reference
Aaron Severson, "Grandfather's Ax: The Many Evolutions of the Triumph TR4, Part 2: TR5, TR250, and TR6", Ate Up With Motor, 7 Nov 2012, "Wasp: six into TR4"; "The carbureted six"; "Triumph TR5 PI and TR250", fuel; "The carbureted six", the axles; "A new bottle: the Triumph TR6", the anti-roll bar; "Triumph TR5 PI and TR250", tyres and wheelcovers; "Triumph TR5 PI and TR250", the dash; view-all page, TR5 and TR250 sections. Reference
Bruno Dwinger, "Geschichte, Typenkunde und Kaufberatung: Standard-Triumph TR4, TR5/TR250 – 'die Michelotti Autos'", TR-Register Deutschland, 2009, 13 pp. (PDF), pp. 4–5, the engine; p. 4, the German papers; p. 5, clutch and overdrive; technical data, TR250; p. 4; p. 11; technical data. Reference
Frédéric Reydellet (racing history), tr5passion.com (group): "En bref / Summary", "Identification", "Lucas injection", "Options", "Technical spec", "Colours", "TR5 Ginevra", "Racing history", TR5 Passion, Technical specification page (_r65); Summary page (_r58); Technical specification page (_r65); Technical specification page (_r65); Options page (_r64); Technical specification page (_r65), pressures; Options page (_r64), hardtop; Colours page (_r59); Options page (_r64); Identification page (_r61); Summary page (_r58); Technical-spec page (_r65); Options page (_r64). Reference
Chris Harvey, TR for Triumph, Oxford Illustrated Press, 1983, ISBN 0-902280-94-5, full-text passage on the cylinder heads. Reference
Motor Sport, "A selection of new models" (Earls Court show), Nov 1967, p. 39, p. 39, Triumph; p. 39, tandem master cylinders; p. 39, the claims; Nov 1967 p. 39, Triumph paragraph. Primary
TR Register, "Triumph TR5 / TR250" (facts sheet, under "Buyers Guide"), engine details; suspension; performance table; facts sheet, prices; facts sheet, engine details; facts sheet, TR250; facts sheet, performance table; facts sheet, suspension; facts sheet, Suspension Details. Reference
Clive Richardson, "The Tale of a TR6", Motor Sport, Nov 1973, p. 54, p. 54, the TR6 brochures. Primary
TR Register, "Triumph TR6 Buyers Guide" (facts sheet), engine ratings. Reference
Moss Motoring, "Driven – 1968 Triumph TR250", 28 Aug 2015, the wheel covers. Reference
Wikipedia (EN), "Triumph TR5", 2026, the infobox: the height; TR250 table. Unchecked
TR Drivers Club, "The TR5/250", performance; TR5/250 page; TR5/250 page, performance. Reference
Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, March 1968, Mar 1968 (vol. 14 no. 3), Mar 1968, price list. Primary
Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1, p. 7, commission numbers (read by the TR4 agent); p. 6, production table (read by the TR4 agent). Reference
Motor Sport, "A–Z of Classic Sporting Cars 1950–1975", Oct 1996, p. 80, Oct 1996 p. 80, TR5 entry. Reference
James Taylor, Triumph TR, Windrow & Greene, Classics in Colour 9, 1994, full-text passage. Reference
Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, January 1969, Jan 1969 (vol. 15 no. 1), Jan 1969 (read by the TR6 agent). Primary

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