| Specifications | R 850 R | R 850 R 25kW |
R 850 R Comfort | |
|---|---|---|---|---|
| Engine | ||||
| Capacity | cc | 848 | ||
| Bore/stroke | mm | 87.5/70.5 | ||
| Max output | kW/bhp | 52/70 | 25/34 | 53/70 |
| @ | rpm | 7000 | 5000 | 7000 |
| Max torque | Nm | 77 | 1160 | 78 |
| @ | rpm | 5600 | 3000 | 5600 |
| Engine configuration | flat-twin | |||
| No of cylinders | 2 | |||
| Compression ratio/fuel grade | 10.3/premium | |||
| Valve control | HC | |||
| Valves per cylinder | 4 | |||
| Intake/outlet dia | mm | 32/27 | ||
| Fuel supply | Motronic MA 2.4 | |||
| Electrical system | ||||
| Alternator | W | 700 | ||
| Battery | V/Ah | 12/19 maintenance-free | ||
| Headlight | W | H4 55/60 | ||
| Starter | kW | 1.1 | ||
| Power transmission | ||||
| Clutch | single-plate dry clutch, dia 180 mm | |||
| Transmission | 6-speed gearbox with dog-type shift | |||
| Primary ratio | 1.889 | |||
| Transmission ratios | I | 2.038 | ||
| II | 1.600 | |||
| III | 1.267 | |||
| IV | 1.034 | |||
| V | 0.903 | |||
| VI | 0.806 | |||
| Final drive | driveshaft | |||
| Transmission ratio | 3.09 | |||
| Suspension and running gear | ||||
| Frame | composite frame, front section in aluminium load-bearing engine | |||
| Wheel suspension, front | BMW Telelever | |||
| Wheel suspension, rear | BMW Paralever | |||
| Spring travel front/rear | mm | 120/135 | ||
| Castor in normal trim | mm | 127 | ||
| Wheelbase in normal trim | mm | 1487 | ||
| Steering head angle in normal trim | ° | 61.9 | ||
| Brakes | front | double disc brake, dia 320 mm | ||
| rear | single disc brake, dia 276 mm | |||
| Wheels | light alloy | |||
| front | 3.50 x 17 | 3.50 x 18 | ||
| rear | 5.00 x 17 | 5.00 x 18 | ||
| Tyres | front | 120/70 ZR 17 | 120/70 ZR 18 | |
| rear | 170/60 ZR 17 | 170/60 ZR 18 | ||
| Dimensions and weights | ||||
| Length, overall | mm | 2170 | ||
| Width overall with mirrors | mm | 940 | 870 | |
| Seat height | mm | 800 | 780 | |
| Weight, unladen, with full tank | kg | 238 | ||
| Max permissible weight, overall | kg | 450 | ||
| Tank capacity | ltr | 20.5 | 17.6 | |
| Performance data | ||||
| Fuel consumption | ||||
| 90 km/h | ltr/100km | 4.6 | ||
| 120 km/h | ltr/100km | 5.7 | ||
| Acceleration | ||||
| 0-100 km/h | sec | 5.0 | 5.0 | |
| standing-start km | sec | 26.0 | 26.0 | |
| Top speed | km/h | 187 | 185 | |
Comfort
