1986 BMW 730 vs. 2009 BMW 650
To start off, 2009 BMW 650 is newer by 23 year(s). Which means there will be less support and parts availability for 1986 BMW 730. In addition, the cost of maintenance, including insurance, on 1986 BMW 730 would be higher. At 4,799 cc (8 cylinders), 2009 BMW 650 is equipped with a bigger engine. In terms of performance, 2009 BMW 650 (360 HP @ 6300 RPM) has 163 more horse power than 1986 BMW 730. (197 HP @ 5800 RPM) In normal driving conditions, 2009 BMW 650 should accelerate faster than 1986 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 1986 BMW 730 weights approximately 70 kg more than 2009 BMW 650.
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, 2009 BMW 650 (488 Nm @ 3400 RPM) has 213 more torque (in Nm) than 1986 BMW 730. (275 Nm @ 4000 RPM). This means 2009 BMW 650 will have an easier job in driving up hills or pulling heavy equipment than 1986 BMW 730.
Compare all specifications:
| 1986 BMW 730 | 2009 BMW 650 | |
| Make | BMW | BMW |
| Model | 730 | 650 |
| Year Released | 1986 | 2009 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2986 cc | 4799 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 197 HP | 360 HP |
| Engine RPM | 5800 RPM | 6300 RPM |
| Torque | 275 Nm | 488 Nm |
| Torque RPM | 4000 RPM | 3400 RPM |
| Engine Bore Size | 89 mm | 93 mm |
| Engine Stroke Size | 80 mm | 88.3 mm |
| Engine Compression Ratio | 9.2:1 | 10.5:1 |
| Top Speed | 225 km/hour | 250 km/hour |
| Acceleration 0-100mph | 9.3 seconds | 5.4 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1600 kg | 1530 kg |
| Vehicle Length | 4920 mm | 4830 mm |
| Vehicle Width | 1850 mm | 1380 mm |
| Vehicle Height | 1420 mm | 1860 mm |
| Wheelbase Size | 2800 mm | 2790 mm |
