Stills & Specification of BMW Z4 Roadster

Wheels

Tyre dimensions front : 225/45 R 17 W
Tyre dimensions rear : 225/45 R 17 W
Wheel dimensions front : 8 J x 17 aluminium
Wheel dimensions rear : 8 J x 17 aluminium

Engine
Cylinders/valves : 6/4
Capacity in ccm : 2,497
Stroke/bore in mm : 78.8/82.0
Max. output in kW (PS) at 1/min : 150 (204)/6,400
Max. torque in Nm at 1/min : 250/2,750
Power-to-weight ratio (EU) in kg/hp : 7.3

Weight in kg
Unladen weight EU : 1,480 (1,505)
Maximum permissible weight : 1,735 (1,760)
Permitted load : 330
Permitted axle load front/rear : 800/970

Performance
Drag (cw) : 0.34
Top speed (km/h) : 242 (239)
Acceleration 0 - 100 km/h (in s) : 6.6 (7.3)
Acceleration 0 - 1,000 m (in s) : 26.9 (27.7)
Acceleration 80 - 120 km/h in 4th/5th gear (in s) : 6.4/7.8

Fuel consumption
Urban (l/100 km) : 12.4 (11.8)
Extra-urban (l/100 km) : 6.2 (6.1)
Composite (l/100 km) : 8.5 (8.2)
CO2 emissions (g/km) : 199 (192)
Tank capacity in I (approx.) : 55

The straight six-cylinder petrol engines in the BMW Z4 sDrive23i, sDrive30i and sDrive35i.

Why does a roadster have an elongated bonnet? To accommodate six cylinders in a row. This is because only straight six-cylinder engines provide the perfect combination of weight and power coupled with dynamic balance and sophisticated smoothness. Constructed from a combination of magnesium and aluminium, the BMW Z4 sDrive23i (150 kW/204 hp) and sDrive30i (190 kW/258 hp) set new standards in dynamic engineering. And in the BMW Z4 sDrive35i, High Precision Injection and Twin Turbo help release up to 225 kW (306 hp) on command.

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