The Wiesmann Roadster MF4-S is a convertible/cabriolet with 2 doors and a front mounted powerplant which transmits the power through the rear wheels.
It's powered courtesy of a naturally aspirated engine of 4 litre capacity. This unit features double overhead camshaft valve gear, a 90 degree V 8 cylinder layout, and 4 valves per cylinder. It develops 414 bhp (420 PS/309 kW) of power at 8300 rpm, and maximum torque of 400 N·m (295 lb·ft/40.8 kgm) at 3900 rpm.
The engine transmits power to the wheels via a 6 speed manual transmission.
Stated weight at the kerb is 1315 kg.
It is claimed to attain a top speed of 293 km/h (182 mph), officially quoted fuel consumption figures are 14.3/7.0/9.6 l/100km urban/extra-urban/combined, and carbon dioxide emissions are 295.0 g/km.
Full specs
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| Carrosserie | |||
|---|---|---|---|
| Carrosserie | 2 seater convertible/cabriolet | ||
| Nombre de portes | 2 | ||
| Designer | |||
| Dimensions et poids | |||
| Empattement | 2507 | 98.7 | |
| Voies AV | |||
| Voies AR | |||
| Longueur | 4230 | 166.5 | |
| Largeur | 1880 | 74 | |
| Hauteur | 1190 | 46.9 | |
| Garde au sol | |||
| 1.69 | |||
| Poids avec pleins | 1315 kg | 2899 | |
| Répartition poids AV | |||
| Réservoir à essence | 70 litres | 15.4 [18.5] UK [US] gal. | |
| Caractéristiques aérodynamique | |||
| Coefficient de pénétration | |||
| maître-couple | |||
| SCx | |||
| naturally aspirated petrol | |||
| Constructeur du moteur | BMW | ||
| Type moteur | S65B40 | ||
| Cylinders | V 8 in 90° vee | ||
| Cylindrée | 4 litre 3999 cc (244.034 cu in) |
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| Alésage × Course | 92 × 75.2 mm
3.62 × 2.96 in |
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| Rapport alésage / course | 1.22 | ||
| Distribution | double overhead camshaft (DOHC)
4 Soupapes par cylindre 32 Total vannes |
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| Puissance maximale | 420 PS (414 bhp) (309 kW) à 8300 tr/mn |
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| Couple maximale | 400 Nm (295 ft·lb) (40.8 kgm) à 3900 tr/mn |
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| Specific output | 77.2 kW/litre 105 ps/litre 103.5 bhp/litre 1.7 bhp/cu in |
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100.03 Nm/litre
1.21 ft·lb/cu3 |
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| Construction | |||
| Lubrification | Carter humide | ||
| Taux de compression | 12:1 | ||
| Carburant | direct petrol injection | ||
| bmep (brake mean effective pressure) | 1257 kPa (182.3 psi) | ||
| Régime maximal | |||
| Nombre de paliers de vilebrequin | |||
| Refroidissement | Water | ||
| Cylindrée Unitaire | 499.88 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalyseur | Y | ||
| Performances | |||
| 0-80km/h | |||
| 0-60mph | |||
| 0-100km/h | 4.4 s | ||
| 0-160km/h | |||
| 0-400m | |||
| 0-1000m | |||
| Vitesse | 293 km/h (182 mph) | ||
| Power-to-weight ratio | Higher is better 319.21 PS/tonne (1000 kg) 0.32 PS/kg 234.77 kW/tonne (1000 kg) 0.23 kW/kg 314.83 bhp/tonne (1000 kg) 0.31 bhp/kg 0.14 bhp/lb |
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| Weight-to-power ratio | Lower is better 4.26 kg/kW 7.11 lb/bhp |
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| Consommation | |||
| Consommation | 14.3/7.0/9.6 l/100km urban/extra-urban/combined | ||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | 14.3/7.0/9.6 l/100km urban/extra-urban/combined | ||
| km/litre | 7.0/14.3/10.4 km/l urban/extra-urban/combined | ||
| UK MPG | 19.8/40.4/29.4 UK MPG urban/extra-urban/combined | ||
| US MPG | 16.4/33.6/24.5 US MPG urban/extra-urban/combined | ||
| Emissions de CO₂ | 295.0 g/km NEDC | ||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | M | ||
| CO2 Effizienz (DE) | G | ||
| Châssis | |||
| Emplacement de moteur | front | ||
| Engine layout | longitudinal | ||
| Traction | rear wheel drive | ||
| Répartition du couple | N/A | ||
| Direction | |||
| turns lock-to-lock | |||
| Turning circle | |||
| Suspension AV | I.DW.CS.ARB. | ||
| Suspension AR | I.DW.TA.CS.ARB. | ||
| Roues AV | 8 x 18 | ||
| Roues AR | 8 x 18 | ||
| Pneumatiques AV | 245/45 x 18 | ||
| Pneumatiques AR | 245/45 x 18 | ||
| Freins AV/AR | VeDi/VeDi-S-ABS | ||
| Diamètre des freins AV | |||
| Diamètre des freins AR | |||
| Braked area | |||
| Transmission | 6 speed manual | ||
| Rapport de démultiplication supérieure | |||
| Rapport de pont | 3.85 | ||
| Généralités | |||
| Carfolio.com ID | 235235 | ||
| Production total | |||
| Type mines | |||
| RAC rating | 42.0 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2010 Wiesmann Roadster MF4-S added 2011-03-02. Last modified 2020-02-02. |
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