1981 BMW 725 vs. 1971 Sunbeam Rapier
To start off, 1981 BMW 725 is newer by 10 year(s). Which means there will be less support and parts availability for 1971 Sunbeam Rapier. In addition, the cost of maintenance, including insurance, on 1971 Sunbeam Rapier would be higher. At 2,493 cc (6 cylinders), 1981 BMW 725 is equipped with a bigger engine. In terms of performance, 1981 BMW 725 (148 HP @ 5500 RPM) has 69 more horse power than 1971 Sunbeam Rapier. (79 HP @ 5200 RPM). In normal driving conditions, 1981 BMW 725 should accelerate faster than 1971 Sunbeam Rapier.
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, 1981 BMW 725 (215 Nm @ 4000 RPM) has 89 more torque (in Nm) than 1971 Sunbeam Rapier. (126 Nm @ 3800 RPM). This means 1981 BMW 725 will have an easier job in driving up hills or pulling heavy equipment than 1971 Sunbeam Rapier.
Compare all specifications:
1981 BMW 725 | 1971 Sunbeam Rapier | |
Make | BMW | Sunbeam |
Model | 725 | Rapier |
Year Released | 1981 | 1971 |
Body Type | Sedan | Coupe |
Engine Position | Front | Front |
Engine Size | 2493 cc | 1725 cc |
Engine Cylinders | 6 cylinders | 4 cylinders |
Engine Type | in-line | in-line |
Horse Power | 148 HP | 79 HP |
Engine RPM | 5500 RPM | 5200 RPM |
Torque | 215 Nm | 126 Nm |
Torque RPM | 4000 RPM | 3800 RPM |
Engine Bore Size | 86 mm | 81.5 mm |
Engine Stroke Size | 71.6 mm | 82.7 mm |
Engine Compression Ratio | 9.6:1 | 9.2:1 |
Fuel Type | Gasoline | Gasoline |
Drive Type | Rear | Rear |
Number of Seats | 5 seats | 4 seats |
Number of Doors | 4 doors | 2 doors |
Vehicle Length | 4870 mm | 4440 mm |
Vehicle Width | 1810 mm | 1670 mm |
Vehicle Height | 1440 mm | 1390 mm |
Wheelbase Size | 2810 mm | 2510 mm |