2006 BMW Z4 2.5i Roadster vs. 2006 BMW Z4 M Coupe
To start off, both 2006 BMW Z4 2.5i Roadster and 2006 BMW Z4 M Coupe were released in the same year (2006). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 3,246 cc (6 cylinders), 2006 BMW Z4 M Coupe is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 M Coupe (343 HP @ 7900 RPM) has 154 more horse power than 2006 BMW Z4 2.5i Roadster. (189 HP @ 6000 RPM) In normal driving conditions, 2006 BMW Z4 M Coupe should accelerate faster than 2006 BMW Z4 2.5i Roadster. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 2.5i Roadster weights approximately 3 kg more than 2006 BMW Z4 M Coupe.
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, 2006 BMW Z4 M Coupe (495 Nm @ 4900 RPM) has 250 more torque (in Nm) than 2006 BMW Z4 2.5i Roadster. (245 Nm @ 3500 RPM). This means 2006 BMW Z4 M Coupe will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4 2.5i Roadster.
Compare all specifications:
| 2006 BMW Z4 2.5i Roadster | 2006 BMW Z4 M Coupe | |
| Make | BMW | BMW |
| Model | Z4 | Z4 |
| Year Released | 2006 | 2006 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 3246 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 189 HP | 343 HP |
| Engine RPM | 6000 RPM | 7900 RPM |
| Torque | 245 Nm | 495 Nm |
| Torque RPM | 3500 RPM | 4900 RPM |
| Engine Compression Ratio | 11.0:1 | 11.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 235 km/hour | 249 km/hour |
| Acceleration 0-100mph | 7 seconds | 5 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1335 kg | 1332 kg |
| Vehicle Length | 4100 mm | 4100 mm |
| Vehicle Width | 1790 mm | 1790 mm |
| Vehicle Height | 1310 mm | 1300 mm |
| Wheelbase Size | 2500 mm | 2500 mm |
| Fuel Consumption Overall | 9 L/100km | 11.4 L/100km |
| Fuel Tank Capacity | 55 L | 60 L |
