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BMW · 1956–1960

1957 BMW R50

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1957 BMW R50
Auction record
Average sale
$16,000
Sales
2
Low
$8,000
High
$24,000

Specifications

Category
Allround
Displacement
494.0 ccm (30.14 cubic inches)
Displacement (cc)
494.00
Engine details
Two cylinder boxer, four-stroke
Power
26.0 HP (19.0 kW) @ 5800 RPM
Top speed
140.0 km/h (87.0 mph)
Compression
6.8:1
Bore × stroke
68.0 x 68.0 mm (2.7 x 2.7 inches)
Fuel system
Carburettor. 24mm Bing
Fuel control
Overhead Valves (OHV)
Ignition
Magneto
Lubrication
Wet sump
Cooling
Air
Gearbox
4-speed
Transmission
Shaft drive (cardan) (final drive)
Clutch
Dry-single plate-cable operated
Frame
Steel doble loop tubular
Front suspension
Cartridge
Rear suspension
Twin shock-Swingarm
Front tyre
3.50-18
Rear tyre
3.50-18
Front brakes
Expanding brake (drum brake). Duplex full hub
Front brake Ø
200 mm (7.9 inches)
Rear brakes
Expanding brake (drum brake)
Rear brake Ø
200 mm (7.9 inches)
Wet weight
195.0 kg (429.9 pounds)
Height
980 mm (38.6 inches)
Length
2125 mm (83.7 inches)
Width
660 mm (26.0 inches)
Wheelbase
1380 mm (54.3 inches)
Starter
Kick

The 1957 BMW R50

1957 BMW R50 sits in the middle of BMW's postwar twin-cylinder lineup, the sensible sibling to the sportier R69 and a step up from the smaller singles the factory still built. This is a shaft-driven boxer twin built for covering real distance without drama, the kind of machine that rewards a relaxed hand and steady throttle rather than aggressive riding. Owners find it mechanically straightforward by the standards of the era, with the flat-twin layout keeping things low and stable at speed, and the shaft final drive meaning none of the chain maintenance that plagued contemporaries. It's a bike built for touring and daily transport, not showing off. The 1957 model carried over without significant mechanical changes from the prior year — buyers comparing it to a 1956 example should focus on mileage, service history, and condition rather than spec differences. Today's buyer tends to be a vintage BMW collector or a rider stepping away from modern bikes in search of something mechanically honest, with moderate but steady collector interest keeping well-sorted examples of the 1957 BMW R50 in reasonable demand.

Auction history

DateListingPriceMileageSource
Sep 19, 20211957 BMW R50$24,000—Bring a Trailer
Mar 30, 20201957 BMW R50/2$8,000—Bring a Trailer

All BMW R50 years

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