Triumph TR 5 classic cars for sale

History of the Triumph TR 5

Produced from August 1967 to September 1968, the Triumph TR 5 succeeded the TR4/TR4A and continued Triumph’s tradition of classic British roadsters. The model was developed primarily for the European market, while the US received the visually similar TR250 with a less powerful engine. Giovanni Michelotti, the well-known Italian designer, updated the TR4’s shape only subtly, focusing on technical advances. The TR5 was notable as the first British production sports car to feature mechanical fuel injection, setting a new standard for its time. With fewer than 3,000 units manufactured, the TR 5 represents a brief but influential chapter in Triumph history.

Model History

As the successor to the TR4/TR4A (1961–1967), the TR5 retained much of its predecessor’s body but introduced the new 2.5-litre straight-six with Lucas petrol injection. Its immediate successor in 1968 was the Triumph TR6, which continued to use the same engine platform but with a more modernised look. The US-market TR250, produced simultaneously, replaced the injection system with twin Zenith-Stromberg carburettors to comply with emission regulations and was built in much higher numbers. These close familial ties to other TR models underpin its special status among Triumph enthusiasts.

Highlights and Unique Features

The Triumph TR 5’s major distinguishing feature is its 2.5-litre fuel-injected straight-six, which gave it around 150 bhp—a significant jump from the outgoing four-cylinder. It was the first British production model to use Lucas mechanical fuel injection, and this technical innovation made it a reference point in its class. Standard equipment included front disc brakes, rear independent suspension, rack-and-pinion steering and a four-speed manual gearbox. Optional extras included overdrive, wire wheels, the distinctive 'Surrey Top', and period accessories like Lucas lamps or a wood dashboard. Early list prices in the UK were £1,260 for the soft top, with various extras available for a surcharge.

Technical Data

Special Editions and Collectible Models

The Triumph TR5 PI (Petrol Injection) is the most sought-after version due to its performance and European-only market. No factory-limited special editions were produced, but the 'Surrey Top' configuration—an innovative hardtop with removable panel—remains a prized accessory. Period upgrades, such as wire wheels, overdrive, and leather interiors, are valued among purists. American-market TR250s are often restored to TR5 PI specification by enthusiasts.

Weak Spots and Common Issues

Potential buyers should pay close attention to the Lucas mechanical injection system, which, if not properly maintained, can develop starting and running problems. Corrosion around the sills, floor pans, and lower wings is typical due to 1960s construction methods. Suspension bushings and rear trailing arms should be inspected for wear. Electrical upgrades are common, especially for the lighting and alternator; some cars have been retrofitted with electronic ignition for improved reliability. Original fuel pumps and fuel lines should be reviewed, especially if ethanol fuels are in use.

Engine, Performance and Handling

The TR5’s straight-six engine with injection gives it strong mid-range torque and brisk acceleration. Compared to its predecessor, the TR5’s power delivery is smoother, and thanks to the independent rear suspension, handling is stable and responsive for a classic roadster. Four-speed gearboxes with optional overdrive are robust, but regular oil changes are recommended. Servicing the Lucas injection system requires specialist knowledge. The US-spec TR250, with twin carbs, feels more sedate and is better suited for cruising than spirited driving. - Triumph TR5 PI: 2.5-litre, fuel-injected, ~150bhp

• Triumph TR250 (US): 2.5-litre, twin-carburettor, ~105bhp

Interior, Comfort, Exterior and Design

Giovanni Michelotti’s design for the TR5 features a mix of classic British roadster proportions with subtle Italian flair—such as the S-shaped dual exhaust, wide side mouldings, and revised front grille. The car was available in period colours like Valencia Blue, Signal Red, Old English White and Bentley Green. Inside, drivers find Smiths gauges, a walnut dashboard, and period-correct switchgear. Seats were offered in either leather or cloth, and original radios were often supplied by Lucas. Accessories included a mohair soft top, luggage racks, wire wheels and heater. The 'Surrey Top' provided a targa-like experience with rigidity and open-air potential.

Other Features and Details

Most UK-delivered TR5s are right-hand drive, but left-hand drive examples exist for continental Europe. Historically correct restorations often feature period accessories like stainless steel luggage racks or Lucas auxiliary lamps. Many surviving TR5s have H-registration or Classic Status for historic vehicle events. Modernised modifications are commonly found for safety and reliability, such as upgraded lighting, high-output alternators and electronic ignition systems.

Summary

The Triumph TR 5, produced for just over a year, is a technically advanced and highly sought-after British roadster that bridged the gap between traditional Triumph sports cars and the more modern TR6. Its rarity, pioneering fuel injection and characteristic 1960s design elements set it apart among classic sports cars of its era. For those seeking a British classic with a distinctive driving experience and motorsport pedigree, the TR5 remains a standout choice, with collector demand and interest reflecting its unique position in the Triumph range.