Comparison of BMW R23 1940 and BMW R25 2 1952 [S]ave
| Attribute |  BMW R25 2 1952 × |  BMW R23 1940 × |
|---|---|---|
| General | ||
| Production from (year) | 1952 | 1940 |
| Make | BMW | BMW |
| Model | BMW R25 2 | BMW R23 |
| Category | Allround | Allround |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor. Bing | Carburettor. Amal |
| Displacement (cm³) | 247 | 247 |
| Power (kw) | 8.7 | 7.3 |
| Fuel consumption (l/100km) | 2.9 | - |
| 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 | 67.3 CO2 g/km. (CO2 - Carbon dioxide emission) | - |
| Fuel control | Overhead Valves (OHV) | Overhead Valves (OHV) |
| Ignition | Battery | Battery |
| Clutch | Single plate dry-cable operated | Single plate dry |
| Lubrication system | Wet sump | Wet sump |
| Compression | 6.5:1 | 6.1:1 |
| Chassis | ||
| Front suspension | Cartridge | Telescopic fork |
| Rear suspension | Twin shock-Plunger | Rigid |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Diameter (mm) | 160 | 180 |
| Frame type | Steel-single cradlel | Steel-single cradlel |
| Front tyre | 2.99-19 | 2.99-19 |
| Rear tyre | 2.99-19 | 2.99-19 |
| Seat | Solo seat with springs | - |
| Other | ||
| Starter | Kick | Kick |
| Dimensions | ||
| Wheelbase (mm) | 1,335 | 1,330 |
| Kerb weight (kg) | 140 | 135 |
| Overall height (mm) | 730 | 900 |
| Overall length (mm) | 2,020 | 2,000 |
| Overall width (mm) | 790 | 800 |
| Ground clearance (mm) | 108 | - |
| Performance | ||
| Top speed (km/h) | 80 | 95 |
| Fuel capacity (l) | 12 | 9.6 |
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