The BMW R75 is a World Warfare II-era motorcycle and sidecar combination made by the German company BMW.
In the 1930s BMW were creating a number of popular and impressive motorcycles. In 1938 development of the R75 started in response to a get from the German Army.
Preproduction types of the R75 were run by the 750 cc part valve engine, which was predicated on the R71 engine unit. Nonetheless it was quickly found necessary to design an all-new OHV 750 cc engine motor for the R75 unit. This OHV engine motor 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 driven with an axle connected to the trunk wheel of the motorcycle. They were fitted with a locking differential and selectable highway and off-road gear ratios through which all and change gears performed. 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 greatly used by the Wehrmacht in Russia and North Africa, though over time 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 Military, agreed upon standardization of parts for both machines, with a view of eventually developing a Z?ndapp-BMW hybrid (chosen the BW 43), in which 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 reached 20,200 units, and after that 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 had not been reached, it remained in production until the Eisenach factory was so terribly destroyed by Allied bombing that production ceased in 1944. An additional 98 systems were constructed by the Soviets in 1946 as reparations.
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