1976 BMW 630 vs. 2006 BMW 650
To start off, 2006 BMW 650 is newer by 30 year(s). Which means there will be less support and parts availability for 1976 BMW 630. In addition, the cost of maintenance, including insurance, on 1976 BMW 630 would be higher. At 4,801 cc (8 cylinders), 2006 BMW 650 is equipped with a bigger engine. In terms of performance, 2006 BMW 650 (360 HP @ 6300 RPM) has 187 more horse power than 1976 BMW 630. (173 HP @ 5500 RPM) In normal driving conditions, 2006 BMW 650 should accelerate faster than 1976 BMW 630.
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, 2006 BMW 650 (488 Nm @ 3400 RPM) has 237 more torque (in Nm) than 1976 BMW 630. (251 Nm @ 4500 RPM). This means 2006 BMW 650 will have an easier job in driving up hills or pulling heavy equipment than 1976 BMW 630.
Compare all specifications:
| 1976 BMW 630 | 2006 BMW 650 | |
| Make | BMW | BMW |
| Model | 630 | 650 |
| Year Released | 1976 | 2006 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2986 cc | 4801 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 173 HP | 360 HP |
| Engine RPM | 5500 RPM | 6300 RPM |
| Torque | 251 Nm | 488 Nm |
| Torque RPM | 4500 RPM | 3400 RPM |
| Engine Bore Size | 89 mm | 93 mm |
| Engine Stroke Size | 80 mm | 88.3 mm |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Length | 4760 mm | 4840 mm |
| Vehicle Width | 1760 mm | 1860 mm |
| Vehicle Height | 1390 mm | 1380 mm |
| Wheelbase Size | 2630 mm | 2790 mm |
