BMW R 1100RT (1997-98) vs BMW R 60 US (1968) vs BMW R 100S (1976-78)
Comparison technical specifications
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| Make: | BMW | BMW | BMW |
| Model: | R 1100RT | R 60 US | R 100S |
| Years: | 1997-98 | 1968 | 1976-78 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, 4 valves per cylinder | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder | Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder |
| Capacity: | 1085 cc / 66.2 cu in | 593 cc / 36 cu-in | 980 cc / 59.8 cu in |
| Bore x Stroke: | 99 x 70.5 mm | 72 x 73 mm | 94 x 70.6 mm |
| Cooling System: | Air/Oil cooled | Air cooled | Air cooled |
| Compression Ratio: | 10.7:1 | 7.5:1 | 9.5:1 |
| Lubrication: | Wet sump | Wet sump | Wet sump |
| Induction: | Fuel injection | 2 x 24mm Bing slide carburetors | 2 x constant depression carburettors, Bing 94/40/105 - 94/40/106 |
| Ignition: | Electronic ignition MA 2.2 Bosch Motronic | Bosch Magneto | Battery ignition |
| Starting: | Electric | Kick | Electric |
| Max Power: | 67.1 kW / 90 hp @ 7250 rpm | 22.4 kW / 30 hp @ 5800 rpm | 51 kW / 70 hp @ 7000 rpm |
| Max Torque: | 95 Nm / 9.7 kgf-m / 69 lb-ft.@ 5500 rpm | 49 Nm / 36 lb-ft @ 5000 rpm | 76 Nm / 7.7 kgf-m / 56 ft-lb @ 6000 rpm |
| Clutch: | Dry, single plate, cable operated | Dry single plate | Dry single plate, with diaphragm spring |
| Transmission: | 5 Speed | 4 Speed | 5 Speed |
| Frame: | Steel, backbone frame | Double loop tubular frame with bolt on rear section | Double sown tubs, dual cradle |
| Front Suspension: | Telelever with central spring strut & linear-rate coil spring. Twin-tube gas-filled shock | Telescopic hydraulic forks | Telescopic fork with hydraulic shock absorber. |
| Front Wheel Travel: | 120 mm / 4.7 in | 208 mm / 8.2 in | 200 mm / 7.8 in |
| Rear Suspension: | Paralever swingarm & shaft drive, single-tube gas-filled shock, variable rebound setting | Long swinging arm with strut | Long swinging arm with adjustable strut. |
| Rear Wheel Travel: | 135 mm / 5.3 in | 125 mm / 4.9 in | 125 mm / 4.9 in |
| Front Brakes: | 2 x 305mm discs, 4 piston calipers | 200mm Drum | 2 x ∅260mm Discs, 2 piston calipers |
| Rear Brakes: | Single 276mm disc, 2 piston caliper | 200mm Drum | 260mm Drum |
| Front Tyre: | 120/70-ZR17 | 3.50-18 | 3.25-19 |
| Rear Tyre: | 160/60-ZR18 | 4.00-18 | 4.00-18 |
| Wheelbase: | 1485 mm / 58.5 in | 1488 mm / 58.6 in | 1465 mm / 57.67 in |
| Seat Height: | 800 mm / 31.4 in. Optional adjustable: 780 mm / 30.7 in / 820 mm / 32.3 in | 845 mm / 33.3 in | 820 mm / 32.3 in |
| Ground Clearance: | 153 mm / 6.2 in | 180 mm / 7.1 in | 165 mm / 6.49 in |
| Wet Weight: | 282 kg / 622 lbs | 207 kg / 457 lbs | 220 kg / 484 lbs |
| Fuel Capacity: | 23 Litres / US 6.1 gal | 24 Litres / 6.5 US gal | 24 Litres / 6.3 US gal |