The BMW R75 is a global Warfare II-era motorcycle and sidecar combination made by the German company BMW.
Inside the 1930s BMW were creating a number of popular and impressive motorcycles. In 1938 development of the R75 started in respond to a question from the German Army.
Preproduction models of the R75 were run by a 750 cc part valve engine, that was based on the R71 engine. However it was quickly found essential to design an all-new OHV 750 cc engine motor for the R75 unit. This OHV engine 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 rear wheel of the motorcycle. They were built in with a locking differential and selectable street and off-road products ratios by which all four and reverse gears did the trick. This made the R75 highly manoeuvrable and with the capacity of negotiating most floors. Additional motorcycle manufactures, like FN and Norton, provided an optional drive to sidecars.
The BMW R75 and its own competitor the Z?ndapp KS 750 were both extensively employed 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 upon standardization of parts for both machines, with a view of eventually creating a Z?ndapp-BMW hybrid (designated the BW 43), when a BMW 286/1 side-car would be grafted onto a Z?ndapp KS 750 motorcycle. They also agreed that the production of the R75 would cease once production come to 20,200 models, and after that point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, manufacturing 20,000 every year.
Since the target of 20,200 BMW R75's had not been reached, it continued to be in production until the Eisenach factory was so terribly broken by Allied bombing that development ceased in 1944. An additional 98 systems were built by the Soviets in 1946 as reparations.
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