Comparison of BMW R37 1926 and BMW R51 3 1953 [S]ave
| Attribute |  BMW R51 3 1953 × |  BMW R37 1926 × |
|---|---|---|
| General | ||
| Production from (year) | 1953 | 1926 |
| Make | BMW | BMW |
| Model | BMW R51 3 | BMW R37 |
| Category | Allround | Allround |
| Engine and transmission | ||
| Engine type | Two cylinder boxer, four-stroke | Two cylinder boxer, four-stroke |
| Fuel system | Carburettor. 22mm | Carburettor. 26mm |
| Displacement (cm³) | 494 | 494 |
| Power (kw) | 17.6 | 11.7 |
| Fuel consumption (l/100km) | - | 4 |
| Cooling system | Air | Air |
| Transmission type,final drive | Shaft drive (cardan) | Shaft drive (cardan) |
| Bore (mm) | 68 | 68 |
| Stroke (mm) | 68 | 68 |
| Gearbox | 4-speed | 3-speed |
| Greenhouse gases | - | 92.8 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Fuel control | Overhead Valves (OHV) | Overhead Valves (OHV) |
| Ignition | - | Bosh magento |
| Clutch | Dry-single plate-cable operated | Single plate dry-cable operated |
| Lubrication system | Wet sump | Wet sump |
| Compression | 6.3:1 | 6.2:1 |
| Chassis | ||
| Front suspension | Cartridge | Leading link |
| Rear suspension | Telscopic | Rigid |
| Front brakes | Expanding brake (drum brake). Duplex full hub | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake). Simplex full hub | - |
| Diameter (mm) | 200 | 150 |
| Frame type | Steel single cradle | Steel doble cradle |
| Front tyre | 3.50-19.00 | 2.99-26 |
| Rear tyre | 3.50-19.00 | 2.99-26 |
| Other | ||
| Starter | Kick | Kick |
| Dimensions | ||
| Wheelbase (mm) | 1,400 | 1,380 |
| Kerb weight (kg) | 190 | 134 |
| Overall height (mm) | 985 | 950 |
| Overall length (mm) | 2,130 | 2,100 |
| Overall width (mm) | 790 | 800 |
| Performance | ||
| Top speed (km/h) | 135 | 115 |
| Fuel capacity (l) | 17 | 14 |
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