Yamaha YZF 750SP (1993) vs BMW R 100RT (1981-83)
Comparison technical specifications
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| Make: | Yamaha | BMW |
| Model: | YZF 750SP | R 100RT |
| Years: | 1993 | 1981-83 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder. | Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder |
| Capacity: | 749 cc / 45.7 cu-in | 980 cc 59.8 cu in |
| Bore x Stroke: | 72 x 46 mm | 94 x 70.6 mm |
| Cooling System: | Liquid cooled | Air cooled |
| Compression Ratio: | 11.5:1 | 9.5:1 |
| Induction: | 4x 4 Y Keihin FCRD39/4 | 2 x Constant depression carburettors, Bing 94/40/105 - 94/40/106 |
| Ignition: | T.C.I. Digital | Battery ignition |
| Starting: | Electric | Electric |
| Max Power: | 125 hp / 91.1 kW @ 12000 rpm | 51 kW 70 hp @ 7000 rpm |
| Max Torque: | 80.4 Nm / 8.2 kgf-m / 59.3 lb-ft @ 9500 rpm | 76 Nm / 7.7 kgf-m / 56 ft-lb @ 6000 rpm |
| Clutch: | Wet, multiple discs, cable operated | Dry single plate, with diaphragm spring |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | Chain | Shaft |
| Gear Ratio: | 1st 2.462 2nd 1.941 3rd 1.632 4th 1.435 5th 1.300 6th 1.190 | 1st 4.4 / 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50 : 1 |
| Front Suspension: | 41mm UD fork, fully adjustable. | Telescopic fork with hydraulic shock absorber. |
| Front Wheel Travel: | 120 mm / 4.7 in | 200 mm / 7.8 in |
| Rear Suspension: | Monocross type fully adjustable Öhlins remote reservoir shock, | Long swinging arm with adjustable strut. |
| Rear Wheel Travel: | 130 mm / 5.1 in | 125 mm / 4.9 in |
| Front Brakes: | 2x 320mm discs 6 piston calipers | 2 x ∅260mm discs, 2 piston calipers |
| Rear Brakes: | Single 245mm disc 2 piston caliper | Simplex ∅200 mm drum |
| Front Tyre: | 120/70 ZR17 | 3.25 H-19 |
| Rear Tyre: | 180/55 ZR17 | 4.00 H-18 |
| Dimensions: | Length 2170 mm / 85.4 in Width 730 mm / 28.7 in Height 1165 mm / 45.8 in | Length 2110 mm / 87 in Width 746 mm / 29.37 in Height 1465 mm / 57.67 in |
| Wheelbase: | 1,420 mm / 55.9 in | 1465 mm / 57.67 in |
| Seat Height: | 795 mm / 31.2 in | 820 mm / 32.3 in |
| Ground Clearance: | 140 mm / 5.5 in | 165 mm / 6.49 in |
| Wet Weight: | 215 kg / 479 lbs | 238 Kg / 525 lbs |
| Fuel Capacity: | 19 Litres / 4.3 gal | 24 Litres / 6.3 US gal |
| Consumption Average: | 15.0 km/lit | 5.1 L/100 km / 19.6 km/l / 46 US mpg |
| Standing ¼ Mile: | 10.71 sec / 207.8 km/h | 13.8 sec / 153 km/h / 95 mph |
| Top Speed: | 260.6 km/h | 203 km/h / 126 mph |