2006 BMW MM Roadster vs. 1999 BMW Z9
To start off, 2006 BMW MM Roadster is newer by 7 year(s). Which means there will be less support and parts availability for 1999 BMW Z9. In addition, the cost of maintenance, including insurance, on 1999 BMW Z9 would be higher. At 4,397 cc (8 cylinders), 1999 BMW Z9 is equipped with a bigger engine. In terms of performance, 2006 BMW MM Roadster (330 HP @ 7900 RPM) has 88 more horse power than 1999 BMW Z9. (242 HP @ 7400 RPM). In normal driving conditions, 2006 BMW MM Roadster should accelerate faster than 1999 BMW Z9.
Let's talk about torque, 1999 BMW Z9 (560 Nm @ 1750 RPM) has 205 more torque (in Nm) than 2006 BMW MM Roadster. (355 Nm @ 4900 RPM). This means 1999 BMW Z9 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW MM Roadster.
Compare all specifications:
| 2006 BMW MM Roadster | 1999 BMW Z9 | |
| Make | BMW | BMW |
| Model | MM Roadster | Z9 |
| Year Released | 2006 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 3245 cc | 4397 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 330 HP | 242 HP |
| Engine RPM | 7900 RPM | 7400 RPM |
| Torque | 355 Nm | 560 Nm |
| Torque RPM | 4900 RPM | 1750 RPM |
| Engine Compression Ratio | 11.5:1 | 18.0:1 |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Length | 4120 mm | 5010 mm |
| Vehicle Width | 1790 mm | 1980 mm |
| Vehicle Height | 1310 mm | 1350 mm |
| Wheelbase Size | 2500 mm | 3060 mm |
