BMW R 100RS (1980-81) vs BMW R 1100RS (1997-98)
Comparison technical specifications
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| Make: | BMW | BMW |
| Model: | R 100RS | R 1100RS |
| Years: | 1980-81 | 1997-98 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder | Four stroke, two cylinder horizontally opposed Boxer, 4 valves per cylinder |
| Capacity: | 980 cc / 59.8 cub in. | 1085 cc / 66.2 cu in |
| Bore x Stroke: | 94 x 70.6 mm | 99 x 70.5 mm |
| Cooling System: | Air cooled | Air/Oil cooled |
| Compression Ratio: | 9.5:1 | 10.7:1 |
| Lubrication: | Wet sump | Wet sump |
| Induction: | 2 x Constant depression carburettors, Bing 94/40/105 - 94/40/106 | Fuel injection |
| Ignition: | Battery ignition | Electronic ignition MA 2.2 Bosch Motronic |
| Alternator: | Bosch 12V/240 W | 12 V 700 W |
| Starting: | Electric | Electric |
| Max Power: | 51 kW / 70 hp / @ 7000 rpm | 67.1 kW / 90 hp @ 7250 rpm |
| Max Torque: | 76 Nm / 7.75 kgf-m / 56 ft-lb @ 6000 rpm | 95 Nm / 9.7 kgf-m / 69 lb-ft.@ 5500 rpm |
| Clutch: | Dry single plate, with diaphragm spring | Dry, single plate, cable operated |
| Transmission: | 5 Speed | 5 Speed |
| Gear Ratio: | 1st 4.40 / 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50:1 | 1st 4.16 / 2nd 2.91 / 3rd 2.13 / 4th 1.74 / 5th 1.45:1 |
| Rear Wheel Ratio: | 1:2.91 or 1:3.00 | 1:2.81 |
| Final Drive: | Shaft | Shaft |
| Frame: | Double sown tubs, dual cradle | Steel, backbone frame |
| Front Suspension: | Telescopic fork with hydraulic shock absorber. | Telelever with central spring strut & linear-rate coil spring. Twin-tube gas-filled shock |
| Front Wheel Travel: | 200 mm / 7.8 in | 120 mm / 4.7 in |
| Rear Suspension: | Long swinging arm with adjustable strut. | Paralever swingarm & shaft drive, single-tube gas-filled shock, variable rebound setting |
| Rear Wheel Travel: | 125 mm / 4.9 in | 125 mm / 4.9 in |
| Front Brakes: | 2 x ∅260mm discs, 2 piston calipers | 2 x ∅305mm discs, 4 piston calipers |
| Rear Brakes: | Simplex ∅200 mm drum | Single ∅276mm disc, 2 piston caliper |
| Front Tyre: | 3.25 - H19 | 120/70-17 |
| Rear Tyre: | 4.00 - H18 | 160/60-18 |
| Dimensions: | Length 2130 mm / 83.8 in Width 746 mm / 29.37 in Height 1300 mm / 51.8 in | Length 2175 mm / 85.6 in Width 920 mm / 36.2 in Height 1286 mm / 50.6 in |
| Wheelbase: | 1465 mm / 57.67 in | 1485 mm / 58.5 in |
| Seat Height: | 820 mm / 32.3 in | 780 mm / 30.7 in |
| Ground Clearance: | 165 mm / 6.49 in | 153 mm / 6.2 in |
| Wet Weight: | 230 kg / 506 lbs | 268 kg / 590.8 lbs |
| Fuel Capacity: | 24 Litres / 6.3 US gal | 22 Litres / US 5.8 gal |
| Consumption Average: | 4.8 L/100 km / 20.8 km/l / 49 US mpg | 6.0 L/100 km / 16.6 km/l / 39.0 US mpg |
| Standing ¼ Mile: | 13.9 sec / 157 km/h / 97.3 mph | 12.1 sec / 177.5 km/h / 110.3 mph |
| Top Speed: | 196 km/h / 121.5 mph | 218.7 km/h / 135.9 mph |