The BMW Z4 M Roadster is a 2 door convertible/cabriolet style road car with a front mounted engine powering the rear wheels.
The Z4 M Roadster is part of BMW's E85 series of cars.
Its engine is a naturally aspirated petrol, 3.2 litre, double overhead camshaft 6 cylinder with 4 valves per cylinder. This unit has an output of 338 bhp (343 PS/252 kW) of power at 7900 rpm, and maximum torque of 365 N·m (269 lb·ft/37.2 kgm) at 4900 rpm.
The engine transmits power to the wheels compliments of a 6 speed manual transmission.
The stated kerb weight is 1485 kg.
Maximum stated speed is 250 km/h, which equates to 155 mph, manufacturer claimed fuel consumption is 18.2/8.6/12.1 l/100km urban/extra-urban/combined, and carbon dioxide emissions are 292.0 g/km.
Full specs
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| Carrocería | |||
|---|---|---|---|
| Carrocería | 2 seater convertible/cabriolet | ||
| Número de puertas | 2 | ||
| diseñado por | |||
| Dimensiones y pesos | |||
| Distancia entre ejes | 2497 | 98.3 | |
| Vía delantera | 1486 | 58.5 | |
| Vía trasera | 1516 | 59.7 | |
| Longitud | 4113 | 161.9 | |
| Ancho | 1781 | 70.1 | |
| Altura | 1302 | 51.3 | |
| Despeje del suelo | |||
| Relación Largo:Dist.entre ejes | 1.65 | ||
| Peso en vacío | 1485 kg | 3274 | |
| Distribución del peso (% adelante) | |||
| Capacità serbatoio | |||
| Aerodinámica | |||
| Coeficiente de penetración | 0.37 | ||
| Superficie frontal | 1.92 m² | ||
| SCx | 0.71 | ||
| Tren motriz | |||
| naturally aspirated petrol | |||
| Fabricante del motor | BMW | ||
| Código de motor | S54B32 | ||
| Número de cilindros | Straight 6 | ||
| Cilindrada | 3.2 litre 3246 cc (198.083 cu in) |
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| Diámetro × Carrera | 87 × 91 mm
3.43 × 3.58 in |
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| Relación diámetro/carrera | 0.96 | ||
| Distribución | double overhead camshaft (DOHC)
4 válvulas por cilindro 24 Total de válvulas |
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| Potencia nominal | 343 PS (338 bhp) (252 kW) a 7900 rpm |
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| Par motor máximo | 365 Nm (269 ft·lb) (37.2 kgm) a 4900 rpm |
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| Potencia específica | 77.6 kW/litre 105.6 ps/litre 104.1 bhp/litre 1.71 bhp/cu in |
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112.45 Nm/litre
1.36 ft·lb/cu3 |
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| Materiales de block / culata | |||
| Lubricación | Cárter húmedo | ||
| Relación de compresión | 11.5:1 | ||
| Alimentación | |||
| 1413 kPa (204.9 psi) | |||
| Maximum RPM | |||
| Casquillos de cigüeñal | |||
| Engine coolant | Water | ||
| 541 cc | |||
| Aspiración | Normal | ||
| Compresor | N/A | ||
| intercooler | None | ||
| catalizador | Y | ||
| Rendimiento | |||
| 0-80km/h | |||
| 0-60mph | |||
| 0-100km/h | 5 s | ||
| 0-160km/h | |||
| 0-400m | |||
| 0-1000m | |||
| Velocidad máxima | 250 km/h (155 mph) | ||
| Power-to-weight ratio | Higher is better 230.77 PS/tonne (1000 kg) 0.23 PS/kg 169.73 kW/tonne (1000 kg) 0.17 kW/kg 227.61 bhp/tonne (1000 kg) 0.23 bhp/kg 0.1 bhp/lb |
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| Weight-to-power ratio | Lower is better 5.89 kg/kW 9.84 lb/bhp |
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| Consumos | |||
| Consumo de combustible | 18.2/8.6/12.1 l/100km urban/extra-urban/combined | ||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | 18.2/8.6/12.1 l/100km urban/extra-urban/combined | ||
| km/litre | 5.5/11.6/8.3 km/l urban/extra-urban/combined | ||
| UK MPG | 15.5/32.8/23.3 UK MPG urban/extra-urban/combined | ||
| US MPG | 12.9/27.4/19.4 US MPG urban/extra-urban/combined | ||
| Emisiones de CO2 | 292.0 g/km NEDC | ||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | M | ||
| CO2 Effizienz (DE) | |||
| Chasis | |||
| Ubicación del motor | front | ||
| Engine layout | longitudinal | ||
| Tracción | rear wheel drive | ||
| Alimentación | N/A | ||
| Dirección, tipo | |||
| turns lock-to-lock | |||
| Turning circle | |||
| Suspensión delantera | |||
| Suspensión trasera | |||
| Ruedas delante | 8J x 18 EH2 IS42 LM | ||
| Ruedas detrás | 9J x 18 EH2 IS30 LM | ||
| Neumáticos delante | 225/45 ZR 18 | ||
| Neumáticos detrás | 255/40 ZR 18 | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | 345 mm | ||
| Rear brake diameter | 328 mm | ||
| Braked area | |||
| Transmisión | 6 speed manual | ||
| Eje trasero desmultiplicación | 0.85 | ||
| Desmultiplicación grupo cónico | 3.62 | ||
| General | |||
| Carfolio.com ID | 133694 | ||
| Unidades producidas | |||
| Model code | |||
| E85 | |||
| RAC rating | 28.2 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2005 BMW Z4 M Roadster added 2005-10-25. Last modified 2013-02-28. |
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