The M850i xDrive Convertible is an all wheel drive convertible/cabriolet motor vehicle with a front positioned engine, sold by BMW.
The BMW M850i xDrive Convertible belongs to the G14 range of cars from BMW.
The power is produced by a turbocharged engine of 4.4 litre capacity. This powerplant features double overhead camshaft valve gear, a 90 degree V 8 cylinder layout, and 4 valves per cylinder. It has an output of 523 bhp (530 PS/390 kW) of power at 5500-6000 rpm, and maximum torque of 750 N·m (553 lb·ft/76.5 kgm) at 1800-4600 rpm.
The engine delivers its power through to the wheels via an 8 speed automatic gearbox.
The stated weight at the kerb is 2090 kg.
Maximum speed claimed is 250 km/h (155 mph), official fuel consumption is 13.3/7.9/9.9 l/100km urban/extra-urban/combined, and carbon dioxide emissions are 225.0 g/km.
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 2+2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2822 mm | 111.1 inches | |
| Track/tread (front) | 1627 mm | 64.1 inches | |
| Track/tread (rear) | 1642 mm | 64.6 inches | |
| Length | 4851 mm | 191 inches | |
| Width | 1902 mm | 74.9 inches | |
| Height | 1345 mm | 53 inches | |
| Ground clearance | 125 mm | 4.9 inches | |
| length:wheelbase ratio | 1.72 | ||
| Kerb weight | 2090 kg | 4608 lb | |
| Weight distribution | |||
| fuel tank capacity | 68.2 litres | 15 [18] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | 0.32 | ||
| Frontal area | 2.22 m² | ||
| CdA | 0.71 | ||
| Powertrain | |||
| engine type | turbocharged petrol | ||
| Engine manufacturer | BMW | ||
| Engine code | N63B44T3 | ||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 4.4 litre 4395 cc (268.199 cu in) |
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| Bore × Stroke | 89 × 88.3 mm
3.5 × 3.48 in |
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| Bore/stroke ratio | 1.01 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 32 valves in total |
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| maximum power output | 530 PS (523 bhp) (390 kW) at 5500-6000 rpm |
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| maximum torque | 750 Nm (553 ft·lb) (76.5 kgm) at 1800-4600 rpm |
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| Specific output | 88.7 kW/litre 120.7 ps/litre 119 bhp/litre 1.95 bhp/cu in |
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| Specific torque |
170.65 Nm/litre
2.06 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 10.5:1 | ||
| Fuel system | direct petrol injection | ||
| bmep (brake mean effective pressure) | 2144.4 kPa (311 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 549.38 cc | ||
| Aspiration | Turbo | ||
| Compressor | |||
| Intercooler | |||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 3.9 s | ||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 250 km/h (155 mph) | ||
| Power-to-weight ratio | Higher is better 253.72 PS/tonne (1000 kg) 0.25 PS/kg 186.6 kW/tonne (1000 kg) 0.19 kW/kg 250.24 bhp/tonne (1000 kg) 0.25 bhp/kg 0.11 bhp/lb |
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| Weight-to-power ratio | Lower is better 5.36 kg/kW 8.95 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | 13.3/7.9/9.9 l/100km urban/extra-urban/combined | ||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | 13.3/7.9/9.9 l/100km urban/extra-urban/combined | ||
| km/litre | 7.5/12.7/10.1 km/l urban/extra-urban/combined | ||
| UK MPG | 21.2/35.8/28.5 UK MPG urban/extra-urban/combined | ||
| US MPG | 17.7/29.8/23.8 US MPG urban/extra-urban/combined | ||
| Carbon dioxide emissions | 225.0 g/km NEDC | ||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | K | ||
| CO2 Effizienz (DE) | E | ||
| chassis | |||
| Engine position | front | ||
| Engine layout | longitudinal | ||
| Drive wheels | all wheel drive | ||
| Torque split | |||
| Steering | power assisted rack & pinion | ||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 8.0J x 20 | ||
| Wheel size rear | 9.0J x 20 | ||
| Tyres front | 245/35 R 20 95Y XL | ||
| Tyres rear | 275/30 R 20 97Y XL | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 8 speed automatic | ||
| Top gear ratio | 0.64 | ||
| Final drive ratio | 2.81 | ||
| general | |||
| Carfolio.com ID | 563805 | ||
| Production total | |||
| Model code | |||
| Model family | G14 | ||
| RAC rating | 39.3 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2018 BMW M850i xDrive Convertible added 2018-11-02. Last modified 2020-03-16. |
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