BMW R57: history, specs, pictures

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Production 1928 - 1930
two cylinder boxer, four-stroke
Top Speed 71 mph (115 km/h)
Horsepower 17.57 HP (13.1 KW) @ 4000RPM
Fuel System carburetor. 24mm bing
Battery 5.8:1
Transmission Final Drive: shaft drive (cardan)
Clutch: dry-single plate-cable operated
Suspension Front: leading link
Rear: long swingarm-oil pressure shocks
Brakes Front: expanding brake (drum brake)
Rear: expanding brake (drum brake)
Front Tire 3.50-26.00
Rear Tire 3.50-26.00
Wheelbase 55.12 inches (1400 mm)
Length 82.68 inches (2100 mm)
Width 31.5 inches (800 mm)
Height 37.4 inches (950 mm)
Weight 195.0 kg (wet)
Fuel Capacity 3.17 Gallon (12.00 Liters)
Fuel Consumption 4.20 liters/100 km (23.8 km/l or 56.00 mpg)
Manuals Service Manual

The BMW R57 was a two cylinder boxer, four-stroke standard produced by BMW between 1928 and 1930. It could reach a top speed of 71 mph (115 km/h). Claimed horsepower was 17.57 HP (13.1 KW) @ 4000 RPM.


The engine was a air cooled two cylinder boxer, four-stroke.


Power was moderated via the dry-single plate-cable operated.


It came with a 3.50-26.00 front tire and a 3.50-26.00 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The front suspension was a leading link while the rear was equipped with a long swingarm-oil pressure shocks. The R57 was fitted with a 3.17 Gallon (12.00 Liters) fuel tank. The wheelbase was 55.12 inches (1400 mm) long.