BMW Z4 M Roadster

BMW Z4 M Roadster

BMW today released official specs and photos of its new Z4 M roadster. The car is powered by the same 3.2-liter inline- six engine as the fourth-generation M3. The high-powered roadster is expected to premier at the Detroit auto show in January, with sales beginning by March or April. The M Roadster will also get modifications to the McPher-son strut front and multilink rear suspension found in the standard Z4. BMW has added aluminum parts to reduce the new car’s unsprung weight. Output per litre is 106 hp and the power-to-weight ratio is 4.1 kilos/hp. On the road this means acceleration to 62mph in 5.0 seconds, with the same short time of 5.0 seconds being required for intermediate acceleration in fourth gear from 80–120 km/h (50–75 mph). Top speed is limited electronically to 250 km/h or 155 mph. The Z4 M roadster will likely sell somewhere between $50,000 and $60,000.