1991 BMW M12 vs. 2006 BMW 630
To start off, 2006 BMW 630 is newer by 15 year(s). Which means there will be less support and parts availability for 1991 BMW M12. In addition, the cost of maintenance, including insurance, on 1991 BMW M12 would be higher. At 4,988 cc (12 cylinders), 1991 BMW M12 is equipped with a bigger engine. In terms of performance, 1991 BMW M12 (296 HP @ 5200 RPM) has 42 more horse power than 2006 BMW 630. (254 HP @ 6600 RPM). In normal driving conditions, 1991 BMW M12 should accelerate faster than 2006 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, 1991 BMW M12 (450 Nm @ 4100 RPM) has 150 more torque (in Nm) than 2006 BMW 630. (300 Nm @ 2500 RPM). This means 1991 BMW M12 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 630.
Compare all specifications:
| 1991 BMW M12 | 2006 BMW 630 | |
| Make | BMW | BMW |
| Model | M12 | 630 |
| Year Released | 1991 | 2006 |
| Body Type | Coupe | Coupe |
| Engine Position | Middle | Front |
| Engine Size | 4988 cc | 2996 cc |
| Engine Cylinders | 12 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 296 HP | 254 HP |
| Engine RPM | 5200 RPM | 6600 RPM |
| Torque | 450 Nm | 300 Nm |
| Torque RPM | 4100 RPM | 2500 RPM |
| Engine Bore Size | 84 mm | 85 mm |
| Engine Stroke Size | 75 mm | 88 mm |
| Engine Compression Ratio | 8.8:1 | 10.7:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Length | 4370 mm | 4830 mm |
| Vehicle Width | 2000 mm | 1860 mm |
| Vehicle Height | 1110 mm | 1380 mm |
| Wheelbase Size | 2610 mm | 2790 mm |
