The BMW R75 is a World War II-era motorcycle and sidecar combination produced by the German company BMW.
Within the 1930s BMW were creating a quantity of popular and highly effective motorcycles. In 1938 development of the R75 started in reaction to a need from the German Army.
Preproduction types of the R75 were driven by a 750 cc side valve engine, that was predicated on the R71 engine. Nonetheless it was quickly found necessary to design an all-new OHV 750 cc engine for the R75 device. This OHV engine unit later proved to be the foundation for following post-war twin BMW engines like the R51/3, R67 and R68.
The third side-car wheel was powered with an axle linked to the rear wheel of the motorcycle. These were fixed with a locking differential and selectable road and off-road gear ratios by which all and reverse gears did the trick. This made the R75 highly manoeuvrable and with the capacity of negotiating most surfaces. Additional motorcycle manufactures, like FN and Norton, provided an optional drive to sidecars.
The BMW R75 and its rival the Z?ndapp KS 750 were both generally 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 upon standardization of parts for both machines, with a view of eventually making a Z?ndapp-BMW hybrid (specified the BW 43), in which a BMW 286/1 side-car would be grafted onto a Z?ndapp KS 750 motorcycle. In addition they decided that the manufacture of the R75 would stop once production come to 20,200 items, and from then on point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, processing 20,000 every year.
Since the target of 20,200 BMW R75's had not been reached, it remained in production until the Eisenach manufacturer was so badly destroyed by Allied bombing that development ceased in 1944. An additional 98 items were set up by the Soviets in 1946 as reparations.
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