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 volume of popular and impressive motorcycles. In 1938 development of the R75 started in response to a submission from the German Military.
Preproduction models of the R75 were power with a 750 cc part valve engine, which was predicated on the R71 engine unit. However it was quickly found necessary to design an all-new OHV 750 cc engine for the R75 product. This OHV engine unit later became the basis for succeeding post-war twin BMW engines like the R51/3, R67 and R68.
The 3rd side-car wheel was influenced with an axle linked to the rear wheel of the motorcycle. They were installed with a locking differential and selectable highway and off-road equipment ratios through which all four and invert gears did the trick. This made the R75 highly manoeuvrable and with the capacity of negotiating most floors. A few other motorcycle manufactures, like FN and Norton, provided an optional drive to sidecars.
The BMW R75 and its competitor the Z?ndapp KS 750 were both generally used by the Wehrmacht in Russia and North Africa, though over time of analysis 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 building a Z?ndapp-BMW hybrid (designated 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 make of the R75 would cease once production reached 20,200 items, and from then on point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, making 20,000 each 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 badly destroyed by Allied bombing that development ceased in 1944. A further 98 units were set up by the Soviets in 1946 as reparations.
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