BMW S 1000R (2015) vs Yamaha IT 250 (1980-81)
Comparison technical specifications
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| Make: | BMW | Yamaha |
| Model: | S 1000R | IT 250 |
| Years: | 2015 | 1980-81 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Two stroke, single cylinder, read valve |
| Capacity: | 999 cc / 60.9 cu-in | 246 cc / 15.07 cu-in |
| Bore x Stroke: | 80 x 49.7 mm | 70 x 64 mm |
| Compression Ratio: | 12.0:1/at least premium unleaded (95 RON) | 9.8;1 |
| Cooling System: | Liquid cooled | Air cooled |
| Induction: | Electronic fuel injection, digital motor electronics BMS-KP | 30mm Mikunis carburetor |
| Starting: | Electric | Kick |
| Max Power: | 118 kW / 160 hp @ 11000 rpm | 32.2 hp @ 7500 rpm |
| Max Torque: | 112 Nm / 11.4 kgf-m / 82.6 lb-ft @ 9250 rpm | 22.6 / 3.12 kg-m @ 7500 rpm |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | Chain 17/45 | Chain |
| Gear Ratio: | 1st 2.6471 / 2nd 2.091 / 3rd 1.727 / 4th 1.500 / 5th 1.360 / 6th 1.261:1 | (1) 32/12, 2.666 (2)30/15, 2.000(3)25/16, 1.563(4)25/20, 1.250 (5)23/22, 1.045(6)21/24,0.875 |
| Frame: | Construction type aluminium bridge frame, enqine self-supporting | Single-downtube, full-cradle chrome-moly frame with aluminum box-section swing arm |
| Front Suspension: | Upside-down fork, stanchion diameter 46 mm, adjustable for bump and rebound SA DDC: electronically adjustable damping | Air-assisted, oil-damped fork |
| Front Wheel Travel: | 120 mm / 4.7 in | 380 mm / |
| Rear Suspension: | Aluminium double-strut swingarm with central spring strut, adjustable rebound, SA DDC: electronically adjustable damping | Aluminum-bodied monoshock with adjustable damping and preload producing |
| Rear Wheel Travel: | 120 mm / 4.7 in | 270 mm / |
| Front Brakes: | 2 x 320mm Discs, 4 piston calipers | Drum 130 x 22mm shoes |
| Rear Brakes: | Single 220mm disc, 1 piston caliper | Drum 150 x 25mm shoes |
| Front Tyre: | 120/70 ZR17 | 90/90 -21 |
| Rear Tyre: | 190/55 ZR17 | 12/90 -18 |
| Wheelbase: | 1422 mm / 56 in | 1450 mm / 57.0 in |
| Wet Weight: | 207 kg / 456.3 lbs | 106.5 kg / 234.7 lbs |
| Fuel Capacity: | 17.5 Litres / 4.6 US gal. | 13 Litres / 3.4 US gal |