BMW R 1150GS (1999) vs BMW R 1100GS (1996) vs BMW R 80GS (1989) vs BMW K100 (1986-90) vs BMW R 45 (1980-)
Comparison technical specifications
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| Make: | BMW | BMW | BMW | BMW | BMW |
| Model: | R 1150GS | R 1100GS | R 80GS | K100 | R 45 |
| Years: | 1999 | 1996 | 1989 | 1986-90 | 1980- |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, 4 valves per cylinder | 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, horizontal in line four cylinder, DOHC, 2 valves per cylinder | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder. |
| Capacity: | 1130 cc / 69 cu in | 1084 cc / 66.1 cu in | 797.5 cc / 48.7 cu in. | 987 cc / 60.2 cub. in | 453 cc / 27.6 cu in. |
| Bore x Stroke: | 101 x 70.5 mm | 99 x 70.5 mm | 84.8 x 70.6 mm | 67 x 70 mm | 70 x 61.5 mm |
| Cooling System: | Air/Oil cooled | Air/oil-cooled | Air cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 10.3:1 | 10.3:1 | 8.2:1 | 10.2:1 | 9.2:1 |
| Induction: | Bosch Motronic MA 2.4 Fuel injection | Bosch Motronic 2.2 with fuel cutoff when coasting | 2 x Bing constant depression carburetors | Electronic injection, Bosch LE-Jetronic | 2 x Bing V65 carburetors |
| Ignition: | Electronic ignition MA 2.2 Bosch Motronic | Electronic MA 2.2 controlled by Bosch Motronic | Battery ignition | Electronic injection, Bosch LE-Jetronic | Bosch contact free electronic ignition |
| Starting: | Electric | Electric | Electric | Electric | Kick |
| Max Power: | 62.5 kW / 85 hp @ 6750 rpm (rear tyre 58.9 kW / 79 hp @ 6750 rpm) | 59 kW / 80 hp @ 6750 rpm | 37 kW / 50 hp @ 6500 rpm | 65.6 kW / 90 hp @ 8000 rpm | 20 kW / 27 hp @ 7250 rpm |
| Max Torque: | 98 Nm / 10.0 kgf-m / 71 lb-ft @ 5250 rpm | 97Nm / 9.9 kgf-m / 71 lb-ft / @ 5250 rpm | 61 Nm / 6.2 kgf-m / 44 ft lb @ 5000 rpm | 86 Nm / 8.8 kgf-m / 63 ft-lb | 37.5 Nm / 3.82 kgf-m / 27.65 lb-ft @ 5000 rpm |
| Transmission: | 6 Speed | 5 Speed | 5 Speed | 5 Speed | 5 Speed |
| Final Drive: | Shaft | Shaft | Shaft | Shaft | Shaft |
| Front Suspension: | Light. Telelever with central spring strut, progressive coil spring, twin-tube gas-filled shock, | BMW Telelever Single gas-filled shock absorber with progressive coil spring, Preload adjustment (five steps) | ∅40mm Marzocchi telescopic hydraulic forks. | Telescopic fork with hydraulic shock absorber | Telescopic hydraulic forks |
| Rear Suspension: | Patented BMW Paralever swing arm & shaft drive, single shock with variable rebound and damping adjustments | BMW Paralever (single-sided swinging arm) Single gas-filled shock absorber with coil spring, Preload adjustment (continuously adjustable by handwheel), Rebound damping (continuously adjustable by screw) | BMW Paralever swinging arm | Monolever swinging arm | Long swinging arm with adjustable strut |
| Rear Wheel Travel: | 220 mm / 8.6 in | 200 mm / 7.9 in | 180 mm / 7.0 in | 110 mm / 4.3 in. | 110 mm / 4.3" |
| Front Brakes: | 2 x 304mm discs, 4 piston calipers | 2 x ∅297mm Discs, 3 piston calipers | Single ∅285mm disc | 2 x ∅285 mm discs, 2 piston calipers | 2 x 260mm Disc, 2 piston caliper. |
| Rear Brakes: | Single 276mm disc, 2 piston caliper | Single ∅250mm disc, 3 piston caliper | ∅200mm Drum | Single ∅285 mm disc, 1 piston caliper | Single 200mm drum |
| Front Tyre: | 110/80 R19 | 110/80 R19 | 90/90 x 21S | 100/90-18 | 1.85 - B18 |
| Rear Tyre: | 150/70 R17 | 150/70 R17 | 13/80 x 17S | 130/90-17 | 2.50 - B18 |
| Fuel Capacity: | 22 Litres / 5.8 US gal | 24 Liters / US 6.3 gal | 24 L / 6.3 US gal | 22 Liters / 5.8 US gal | 22 Litres / 5.8 US gal |