The BMW R 90 S motorcycle specifications include a 898 cc (54.80 cu in) engine, a 5-speed gearbox, and a listed weight of 232 kg (511.5 lb).
Key specifications
Year-specific specification changes
How the BMW R 90 S compares
This compares the motorcycle with all BMW models in this specifications database. The blue marker is this model and the grey line is the BMW database average.
Very close to the BMW database average. Around the 51st percentile across BMW models.
Very close to the BMW database average. Around the 59th percentile across BMW models.
About 25% larger than the BMW database average. Around the 88th percentile across BMW models.
BMW database percentile rankings
Percentiles show where this motorcycle sits across the BMW specifications database. They are descriptive database rankings, not performance ratings.
898 cc — larger displacement than about 51% of BMW models.
232 kg — heavier than about 59% of BMW models, or lighter than about 41%.
24 L — larger than about 88% of BMW fuel tanks in this database.
Mechanical overview
Additional useful specifications
| Front tire size | 3.25-19 |
|---|---|
| Rear tire size | 4.00-18 |
| Bore/stroke ratio | 1.27:1 (Oversquare) |
Model information
| Category | Sport touring |
|---|
Engine specifications
| Engine type | Two cylinder boxer, four-stroke |
|---|---|
| Displacement | 898 cc (54.80 cu in) |
| Bore × stroke | 90.0 x 70.6 mm (3.5 x 2.8 inches) |
| Compression ratio | 9.5:1 |
| Valves per cylinder | 2 |
| Cooling system | Air |
| Fuel control | Overhead Valves (OHV) |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Shaft drive (cardan) (final drive) |
Brakes, wheels and tires
| Front brakes | Dual disc |
|---|---|
| Rear brakes | Expanding brake |
| Front tire | 3.25-19 |
| Rear tire | 4.00-18 |
Dimensions and weight
| Wet weight | 232 kg (511.5 lb) |
|---|
Fuel and emissions
| Fuel capacity | 24.00 L (6.34 US gal) |
|---|
Performance
| Top speed | 196.0 km/h (121.8 mph) |
|---|
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from BMW models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official BMW information before relying on them. Visit the official BMW website.