1976 BMW 630 vs. 1986 BMW 735
To start off, 1986 BMW 735 is newer by 10 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 3,453 cc (6 cylinders), 1986 BMW 735 is equipped with a bigger engine. In terms of performance, 1986 BMW 735 (215 HP @ 5200 RPM) has 42 more horse power than 1976 BMW 630. (173 HP @ 5500 RPM) In normal driving conditions, 1986 BMW 735 should accelerate faster than 1976 BMW 630. With that said, vehicle weight also plays an important factor in acceleration. 1986 BMW 735 weights approximately 228 kg more than 1976 BMW 630. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 1986 BMW 735 (310 Nm @ 4000 RPM) has 59 more torque (in Nm) than 1976 BMW 630. (251 Nm @ 4500 RPM). This means 1986 BMW 735 will have an easier job in driving up hills or pulling heavy equipment than 1976 BMW 630.
Compare all specifications:
| 1976 BMW 630 | 1986 BMW 735 | |
| Make | BMW | BMW |
| Model | 630 | 735 |
| Year Released | 1976 | 1986 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2986 cc | 3453 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 173 HP | 215 HP |
| Engine RPM | 5500 RPM | 5200 RPM |
| Torque | 251 Nm | 310 Nm |
| Torque RPM | 4500 RPM | 4000 RPM |
| Engine Bore Size | 89 mm | 92 mm |
| Engine Stroke Size | 80 mm | 86 mm |
| Engine Compression Ratio | 8.0:1 | 10.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1458 kg | 1686 kg |
| Vehicle Length | 4760 mm | 4920 mm |
| Vehicle Width | 1760 mm | 1850 mm |
| Vehicle Height | 1390 mm | 1420 mm |
| Wheelbase Size | 2630 mm | 2840 mm |
