1955 Triumph TR3 vs. 1968 Triumph 2.5
To start off, 1968 Triumph 2.5 is newer by 13 year(s). Which means there will be less support and parts availability for 1955 Triumph TR3. In addition, the cost of maintenance, including insurance, on 1955 Triumph TR3 would be higher. At 2,498 cc (6 cylinders), 1968 Triumph 2.5 is equipped with a bigger engine. In terms of performance, 1968 Triumph 2.5 (150 HP @ 5500 RPM) has 56 more horse power than 1955 Triumph TR3. (94 HP @ 5000 RPM) In normal driving conditions, 1968 Triumph 2.5 should accelerate faster than 1955 Triumph TR3. With that said, vehicle weight also plays an important factor in acceleration. 1968 Triumph 2.5 weights approximately 208 kg more than 1955 Triumph TR3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1968 Triumph 2.5 (222 Nm @ 3500 RPM) has 62 more torque (in Nm) than 1955 Triumph TR3. (160 Nm @ 3000 RPM). This means 1968 Triumph 2.5 will have an easier job in driving up hills or pulling heavy equipment than 1955 Triumph TR3.
Compare all specifications:
| 1955 Triumph TR3 | 1968 Triumph 2.5 | |
| Make | Triumph | Triumph |
| Model | TR3 | 2.5 |
| Year Released | 1955 | 1968 |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 2498 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 94 HP | 150 HP |
| Engine RPM | 5000 RPM | 5500 RPM |
| Torque | 160 Nm | 222 Nm |
| Torque RPM | 3000 RPM | 3500 RPM |
| Engine Bore Size | 83 mm | 74.7 mm |
| Engine Stroke Size | 92 mm | 95 mm |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 169 km/hour | 171 km/hour |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 925 kg | 1133 kg |
| Vehicle Length | 3840 mm | 4420 mm |
| Vehicle Width | 1420 mm | 1660 mm |
| Wheelbase Size | 2240 mm | 2700 mm |
| Fuel Tank Capacity | 29 L | 64 L |
