1998 BMW 730 vs. 2007 BMW 550
To start off, 2007 BMW 550 is newer by 9 year(s). Which means there will be less support and parts availability for 1998 BMW 730. In addition, the cost of maintenance, including insurance, on 1998 BMW 730 would be higher. At 2,793 cc (6 cylinders), 1998 BMW 730 is equipped with a bigger engine. In terms of performance, 2007 BMW 550 (362 HP @ 6300 RPM) has 172 more horse power than 1998 BMW 730. (190 HP @ 5300 RPM) In normal driving conditions, 2007 BMW 550 should accelerate faster than 1998 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 1998 BMW 730 weights approximately 85 kg more than 2007 BMW 550.
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, 2007 BMW 550 (491 Nm @ 3400 RPM) has 211 more torque (in Nm) than 1998 BMW 730. (280 Nm @ 3950 RPM). This means 2007 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 1998 BMW 730.
Compare all specifications:
| 1998 BMW 730 | 2007 BMW 550 | |
| Make | BMW | BMW |
| Model | 730 | 550 |
| Year Released | 1998 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 2793 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 190 HP | 362 HP |
| Engine RPM | 5300 RPM | 6300 RPM |
| Torque | 280 Nm | 491 Nm |
| Torque RPM | 3950 RPM | 3400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1745 kg | 1660 kg |
| Vehicle Length | 5130 mm | 4850 mm |
| Vehicle Width | 1870 mm | 1490 mm |
| Vehicle Height | 1430 mm | 1850 mm |
| Wheelbase Size | 2940 mm | 2890 mm |
| Fuel Tank Capacity | 90 L | 70 L |
