1999 BMW Z9 vs. 1990 BMW 730
To start off, 1999 BMW Z9 is newer by 9 year(s). Which means there will be less support and parts availability for 1990 BMW 730. In addition, the cost of maintenance, including insurance, on 1990 BMW 730 would be higher. At 4,397 cc (8 cylinders), 1999 BMW Z9 is equipped with a bigger engine. In terms of performance, 1999 BMW Z9 (242 HP @ 7400 RPM) has 61 more horse power than 1990 BMW 730. (181 HP @ 5800 RPM). In normal driving conditions, 1999 BMW Z9 should accelerate faster than 1990 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 1999 BMW Z9 weights approximately 30 kg more than 1990 BMW 730. 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, 1999 BMW Z9 (560 Nm @ 1750 RPM) has 300 more torque (in Nm) than 1990 BMW 730. (260 Nm @ 4000 RPM). This means 1999 BMW Z9 will have an easier job in driving up hills or pulling heavy equipment than 1990 BMW 730.
Compare all specifications:
| 1999 BMW Z9 | 1990 BMW 730 | |
| Make | BMW | BMW |
| Model | Z9 | 730 |
| Year Released | 1999 | 1990 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4397 cc | 2986 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 242 HP | 181 HP |
| Engine RPM | 7400 RPM | 5800 RPM |
| Torque | 560 Nm | 260 Nm |
| Torque RPM | 1750 RPM | 4000 RPM |
| Engine Compression Ratio | 18.0:1 | 9.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1630 kg | 1600 kg |
| Vehicle Length | 5010 mm | 4920 mm |
| Vehicle Width | 1980 mm | 1850 mm |
| Vehicle Height | 1350 mm | 1420 mm |
| Wheelbase Size | 3060 mm | 2840 mm |
