2006 NY Auto Show
The BMW M Roadster returns to the stable of BMW M products for the model year. This time it is based on the enhanced and widely acclaimed Z4 Roadster. The Z4 Roadster receives a number of enhancements for the model year, not the least of which are the latest Valvetronic inline six cylinder engines.
At the heart of the new M Roadster is BMW M's award winning, 3.2-liter in-line six cylinder engine. With its high-speed concept, this engine works through a six-speed manual transmission to provide exhilarating performance in all speed ranges. As in the M3, this 3,246 cc engine features dual overhead cams, double-VANOS variable valve timing, and six individual throttle plates. This normally aspirated engine generates more than 100 hp per liter.
The M Roadster features the speed-sensitive variable M differential lock. It provides outstanding stability and traction, particularly when accelerating out of bends. Under challenging conditions such as a different frictional coefficient on each side of the car, often the case in wet or slippery weather, the system contributes to a remarkable level of traction and stability.
