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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.








Z4 M - Click for enlarged view.












Z4 3.0 - Click for enlarged view.












Z4 M - Click for enlarged view.












Z4 M - Click for enlarged view.




Other offerings

The new 3.0-litre straight-six in the BMW Z4 Roadster 3.0si offers 265 hp at 6,600 rpm, and peak torque of 315 Newton-metres or 232 lb-ft maintained consistently from 2,500-4,000 rpm.

Two 2.5-litre power units round off the range of six-cylinders, developing maximum output of 160 kW/218 hp. Peak torque of 250 Newton-metres or 184 lb-ft is maintained consistently between 2900 and 4250 rpm, accelerating the Z4 Roadster 2.5si from 0-100 km/h in a mere 6.5 seconds.

The 2.0-litre four-cylinder power unit featured in the BMW Z4 Roadster 2.0i completes the range of engines. Developing 110 kW/150 hp at 6,200 rpm and maximum torque of 200 Newton-metres or 147 lb-ft at 3,600 rpm, this straight-four brings the Z4 to 62mph in 8.2 seconds.

European pricing