1977 BMW 728 vs. 1973 Rover P5B
To start off, 1977 BMW 728 is newer by 4 year(s). Which means there will be less support and parts availability for 1973 Rover P5B. In addition, the cost of maintenance, including insurance, on 1973 Rover P5B would be higher. At 3,528 cc (8 cylinders), 1973 Rover P5B is equipped with a bigger engine. In terms of performance, 1977 BMW 728 (170 HP @ 6000 RPM) has 12 more horse power than 1973 Rover P5B. (158 HP @ 5200 RPM). In normal driving conditions, 1977 BMW 728 should accelerate faster than 1973 Rover P5B. With that said, vehicle weight also plays an important factor in acceleration. 1973 Rover P5B weights approximately 44 kg more than 1977 BMW 728.
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, 1973 Rover P5B (295 Nm @ 3000 RPM) has 60 more torque (in Nm) than 1977 BMW 728. (235 Nm @ 3700 RPM). This means 1973 Rover P5B will have an easier job in driving up hills or pulling heavy equipment than 1977 BMW 728. 1973 Rover P5B has automatic transmission and 1977 BMW 728 has manual transmission. 1977 BMW 728 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1973 Rover P5B will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1977 BMW 728 | 1973 Rover P5B | |
| Make | BMW | Rover |
| Model | 728 | P5B |
| Year Released | 1977 | 1973 |
| Body Type | Sedan | Coupe |
| Engine Size | 2788 cc | 3528 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 170 HP | 158 HP |
| Engine RPM | 6000 RPM | 5200 RPM |
| Torque | 235 Nm | 295 Nm |
| Torque RPM | 3700 RPM | 3000 RPM |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Vehicle Weight | 1536 kg | 1580 kg |
| Vehicle Length | 4870 mm | 4750 mm |
| Vehicle Width | 1810 mm | 1790 mm |
| Vehicle Height | 1440 mm | 1480 mm |
| Wheelbase Size | 2800 mm | 2820 mm |
