The BMW R75 is a global Warfare II-era motorcycle and sidecar combo made by the German company BMW.
Inside the 1930s BMW were creating a range of popular and highly effective motorcycles. In 1938 development of the R75 started in reaction to a request from the German Army.
Preproduction types of the R75 were powered with a 750 cc aspect valve engine, which was based on the R71 engine unit. However it was quickly found necessary to design an all-new OHV 750 cc engine motor for the R75 unit. This OHV engine unit later proved to be the basis for subsequent post-war twin BMW engines like the R51/3, R67 and R68.
The third side-car wheel was motivated with an axle linked to the trunk wheel of the motorcycle. These were built in with a locking differential and selectable road and off-road products ratios by which all four and change gears worked well. This made the R75 highly manoeuvrable and capable of negotiating most floors. A few other motorcycle manufactures, like FN and Norton, provided an optional drive to sidecars.
The BMW R75 and its own rival the Z?ndapp KS 750 were both extensively used by the Wehrmacht in Russia and North Africa, though after a period of evaluation it became clear that the Z?ndapp was the superior machine. In August 1942 Z?ndapp and BMW, on the urging of the Army, agreed after standardization of parts for both machines, with a view of eventually developing a Z?ndapp-BMW hybrid (specified the BW 43), when a BMW 286/1 side-car would be grafted onto a Z?ndapp KS 750 motorcycle. They also decided that the produce of the R75 would stop once production reached 20,200 devices, and from then on point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, developing 20,000 each year.
Since the aim for of 20,200 BMW R75's was not reached, it remained in production before Eisenach stock was so terribly broken by Allied bombing that development ceased in 1944. An additional 98 devices were put together by the Soviets in 1946 as reparations.
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