The BMW 640i Convertible is a rear wheel drive car, with its engine mounted in the front, and a 2 door convertible/cabriolet body.
The BMW 640i Convertible belongs to the F12 range of cars from BMW.
Powering the BMW 640i Convertible is a double overhead camshaft, 3 litre turbocharged 6 cylinder powerplant, with 4 valves per cylinder that develops power and torque figures of 315 bhp (319 PS/235 kW) at 5800-6000 rpm and 448 N·m (330 lb·ft/45.7 kgm) at 1300-4500 rpm respectively.
The engine transmits power to the wheels via an 8 speed automatic gearbox.
The BMW 640i Convertible weighs a claimed 1928 kg at the kerb.
Its maximum speed claimed is 209 km/h or 130 mph, quoted fuel consumption figures are 20/29/23 US MPG EPA city/highway/combined.
Full specs
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Applicable to the USA domestic market(s). | ||
| bodywork | |||
|---|---|---|---|
| Body type | 2+2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2855 mm | 112.4 inches | |
| Track/tread (front) | 1600 mm | 63 inches | |
| Track/tread (rear) | 1666 mm | 65.6 inches | |
| Length | 4897 mm | 192.8 inches | |
| Width | 1895 mm | 74.6 inches | |
| Height | 1364 mm | 53.7 inches | |
| Ground clearance | 122 mm | 4.8 inches | |
| length:wheelbase ratio | 1.72 | ||
| Kerb weight | 1928 kg | 4251 lb | |
| Weight distribution | 49% front | ||
| fuel tank capacity | 70.1 litres | 15.4 [18.5] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | 0.31 | ||
| Frontal area | 2.23 m² | ||
| CdA | 0.69 | ||
| Powertrain | |||
| engine type | turbocharged petrol | ||
| Engine manufacturer | BMW | ||
| Engine code | N55B30O0 | ||
| Cylinders | Straight 6 | ||
| Capacity | 3 litre 2979 cc (181.79 cu in) |
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| Bore × Stroke | 84 × 89.6 mm
3.31 × 3.53 in |
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| Bore/stroke ratio | 0.94 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 24 valves in total |
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| maximum power output | 319 PS (315 bhp) (235 kW) at 5800-6000 rpm |
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| maximum torque | 448 Nm (330 ft·lb) (45.7 kgm) at 1300-4500 rpm |
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| Specific output | 78.9 kW/litre 107.2 ps/litre 105.7 bhp/litre 1.73 bhp/cu in |
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| Specific torque |
150.39 Nm/litre
1.82 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 10.2:1 | ||
| Fuel system | direct petrol injection | ||
| bmep (brake mean effective pressure) | 1889.8 kPa (274.1 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 496.5 cc | ||
| Aspiration | Turbo | ||
| Compressor | |||
| Intercooler | |||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 5.4 s | ||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 209 km/h (130 mph) | ||
| Power-to-weight ratio | Higher is better 165.65 PS/tonne (1000 kg) 0.17 PS/kg 121.83 kW/tonne (1000 kg) 0.12 kW/kg 163.38 bhp/tonne (1000 kg) 0.16 bhp/kg 0.07 bhp/lb |
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| Weight-to-power ratio | Lower is better 8.21 kg/kW 13.71 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | 20/29/23 US MPG EPA city/highway/combined | ||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | 11.8/8.1/10.2 l/100km city/highway/combined | ||
| km/litre | 8.5/12.3/9.8 km/l city/highway/combined | ||
| UK MPG | 24.0/34.8/27.6 UK MPG city/highway/combined | ||
| US MPG | 20.0/29.0/23.0 US MPG city/highway/combined | ||
| Carbon dioxide emissions | |||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | |||
| CO2 Effizienz (DE) | |||
| chassis | |||
| Engine position | front | ||
| Engine layout | longitudinal | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | power assisted rack & pinion | ||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 8J x 18 | ||
| Wheel size rear | 8J x 18 | ||
| Tyres front | 245/45 R 18 100V XL | ||
| Tyres rear | 245/45 R 18 100V XL | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 8 speed automatic | ||
| Top gear ratio | 0.67 | ||
| Final drive ratio | 3.23 | ||
| general | |||
| Carfolio.com ID | 539363 | ||
| Production total | |||
| Model code | |||
| Model family | F12 | ||
| RAC rating | 26.2 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2018 BMW 640i Convertible added 2018-01-08. Last modified 2020-03-16. |
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