BMW R50 OS Specs (Top Speed | Horsepower | Weight)

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The BMW R50 OS motorcycle specifications include a 494 cc (30.14 cu in) engine, a 4-speed gearbox, and a listed weight of 198 kg (436.5 lb).

Key specifications

1960-1962Model years
494 ccDisplacement
198 kgWet weight
24 LFuel tank
1,450 mmWheelbase
Model years covered
196019611962

Year-specific specification changes

No material specification changes from the 1960 baseline were found in the available data.

How the BMW R50 OS 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.

Displacement494 cc
Low 247 ccAverage 909 ccHigh 1,649 cc

About 46% lower than the BMW database average. Around the 13th percentile across BMW models.

Wet weight198 kg
Low 130 kgAverage 226.7 kgHigh 364 kg

About 13% lighter than the BMW database average. Around the 23rd percentile across BMW models.

Fuel capacity24 L
Low 9.8 LAverage 19.2 LHigh 30 L

About 25% larger than the BMW database average. Around the 88th percentile across BMW models.

This model BMW database average

BMW database percentile rankings

Percentiles show where this motorcycle sits across the BMW specifications database. They are descriptive database rankings, not performance ratings.

Displacement13th

494 cc — larger displacement than about 13% of BMW models.

Wet weight23rd

198 kg — heavier than about 23% of BMW models, or lighter than about 77%.

Fuel capacity88th

24 L — larger than about 88% of BMW fuel tanks in this database.

Dimensions compared with BMW average

Each measurement is compared with the average value across BMW models where that dimension is available.

Overall length2,125 mm
This bike

2,125

BMW avg

2,193

3% below average.

Overall width660 mm
This bike

660

BMW avg

877

25% below average.

Overall height980 mm
This bike

980

BMW avg

1,199

18% below average.

Wheelbase1,450 mm
This bike

1,450

BMW avg

1,497

3% below average.

Mechanical overview

Engine layout snapshot

Two cylinder boxer, four-stroke • 494 cc • Air cooled
Chassis snapshot

Wheelbase 1,450 mm
4-speed • Shaft drive (cardan) (final drive) • 3.50-18.00 front / 3.50-18.00 rear

Additional useful specifications

Front tire size 3.50-18.00
Rear tire size 3.50-18.00
Estimated theoretical fuel range 471 km
Bore/stroke ratio 1.00:1 (Square)

Model information

Category Allround

Engine specifications

Engine type Two cylinder boxer, four-stroke
Displacement 494 cc (30.14 cu in)
Bore × stroke 68.0 x 68 mm (2.7 x 2.7 inches)
Compression ratio 9.5:1
Cooling system Air
Fuel system Carburettor. Bing
Fuel control Overhead Valves (OHV)
Ignition Magneto
Starter Kick
Lubrication Wet sump

Transmission and drivetrain

Gearbox 4-speed
Final drive Shaft drive (cardan) (final drive)
Clutch Dry-single plate-cable operated

Chassis and suspension

Frame Steel doble cradle
Front suspension Cartridge
Rear suspension Twin shock-Swingarm

Brakes, wheels and tires

Front brakes Expanding brake (drum brake). Duplex full hub
Rear brakes Expanding brake (drum brake). Simplex full hub
Front tire 3.50-18.00
Rear tire 3.50-18.00

Dimensions and weight

Wet weight 198 kg (436.5 lb)
Overall length 2,125 mm (83.7 inches)
Overall width 660 mm (26.0 inches)
Overall height 980 mm (38.6 inches)
Wheelbase 1,450 mm (57.1 inches)

Fuel and emissions

Fuel capacity 24.00 L (6.34 US gal)
Fuel consumption 5.10 L/100 km (19.6 km/l or 46.12 mpg)
Greenhouse gases 118.3 CO 2 g/km. (CO2 – Carbon dioxide emission)

Performance

Top speed 160.0 km/h (99.4 mph)

Other specifications

Seat Dual seat

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.

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