1998 BMW 730 vs. 2005 BMW 645
To start off, 2005 BMW 645 is newer by 7 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 4,390 cc (8 cylinders), 2005 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (338 HP @ 6100 RPM) has 148 more horse power than 1998 BMW 730. (190 HP @ 5300 RPM) In normal driving conditions, 2005 BMW 645 should accelerate faster than 1998 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 1998 BMW 730 weights approximately 30 kg more than 2005 BMW 645.
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, 2005 BMW 645 (439 Nm @ 3600 RPM) has 159 more torque (in Nm) than 1998 BMW 730. (280 Nm @ 3950 RPM). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1998 BMW 730. 2005 BMW 645 has automatic transmission and 1998 BMW 730 has manual transmission. 1998 BMW 730 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
1998 BMW 730 | 2005 BMW 645 | |
Make | BMW | BMW |
Model | 730 | 645 |
Year Released | 1998 | 2005 |
Body Type | Sedan | Coupe |
Engine Position | Front | Front |
Engine Size | 2793 cc | 4390 cc |
Engine Cylinders | 6 cylinders | 8 cylinders |
Engine Type | in-line | V |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 190 HP | 338 HP |
Engine RPM | 5300 RPM | 6100 RPM |
Torque | 280 Nm | 439 Nm |
Torque RPM | 3950 RPM | 3600 RPM |
Engine Bore Size | 84.1 mm | 92 mm |
Engine Stroke Size | 84 mm | 83 mm |
Engine Compression Ratio | 10.2:1 | 10.5:1 |
Fuel Type | Gasoline | Gasoline - Premium |
Drive Type | Rear | Rear |
Transmission Type | Manual | Automatic |
Number of Seats | 5 seats | 4 seats |
Number of Doors | 4 doors | 2 doors |
Vehicle Weight | 1745 kg | 1715 kg |
Vehicle Length | 5130 mm | 4830 mm |
Vehicle Width | 1870 mm | 1860 mm |
Vehicle Height | 1430 mm | 1380 mm |
Wheelbase Size | 2940 mm | 2790 mm |
Fuel Tank Capacity | 90 L | 70 L |