BMW K75S (1992) vs BMW R 100S (1976-78)

Comparison technical specifications

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Make:	BMW	BMW
Model:	K75S	R 100S
Years:	1992	1976-78
Engine:	Four-stroke, horizontal three cylinder in-line, DOHC, 2 valves per cylinder	Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Capacity:	740 cc / 45 cub. in.	980 cc / 59.8 cu in
Bore x Stroke:	67 x 70 mm	94 x 70.6 mm
Compression Ratio:	11.0:1	9.5:1
Lubrication:	Wet sump	Wet sump
Induction:	Electronic injection, Bosch LE-Jetronic	2 x constant depression carburettors, Bing 94/40/105 - 94/40/106
Starting:	Electric	Electric
Max Power:	55 kW / 75 hp @ 8500 rpm	51 kW / 70 hp @ 7000 rpm
Max Torque:	68 Nm / 6.9 kgf-m / 50 ft lb @ 6750 rpm	76 Nm / 7.7 kgf-m / 56 ft-lb @ 6000 rpm
Transmission:	5 Speed	5 Speed
Clutch:	Single dry plate	Dry single plate, with diaphragm spring
Frame:	Double-downtube frame with engine as a stressed member; box-section aluminum monolever swing arm.	Double sown tubs, dual cradle
Front Suspension:	Telescopic fork with hydraulic shock absorber.	Telescopic fork with hydraulic shock absorber.
Front Wheel Travel:	185mm / 7.3 in.	200 mm / 7.8 in
Rear Suspension:	Monolever swinging arm.	Long swinging arm with adjustable strut.
Rear Wheel Travel:	114mm / 4.5 in.	125 mm / 4.9 in
Front Brakes:	2 x ∅285mm discs, 2 piston calipers	2 x ∅260mm Discs, 2 piston calipers
Rear Brakes:	Single ∅285mm disc	260mm Drum
Front Tyre:	100/90-18	3.25-19
Rear Tyre:	130/90-17	4.00-18
Dimensions:	Length 2220 mm / 87.4 in Width 900 mm / 35.4 in Height 1340 mm / 51.2 in	Length 2130 mm / 83.8 in Width 746 mm / 29.37 in Height 1210 mm / 47.6 in
Seat Height:	810 mm /31.9 in. or 760 mm / 29.9 in. for low seat model	820 mm / 32.3 in
Ground Clearance:	175 mm / 6.9 in.	165 mm / 6.49 in
Wet Weight:	235 kg / 518 lbs	220 kg / 484 lbs
Fuel Capacity:	21 liters / 5.54 US gal	24 Litres / 6.3 US gal
Top Speed:	210 km/h / 131 mph	190.7 km/h / 118.5 mph