The BMW R75 is a global Warfare II-era motorcycle and sidecar mixture made by the German company BMW.
In the 1930s BMW were creating a number of popular and highly effective motorcycles. In 1938 development of the R75 were only available in reaction to a need from the German Army.
Preproduction types of the R75 were run with a 750 cc area valve engine, that was based on the R71 engine. Nonetheless 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 following post-war twin BMW engines like the R51/3, R67 and R68.
The 3rd side-car wheel was powered with an axle linked to the trunk wheel of the motorcycle. They were built in with a locking differential and selectable highway and off-road gear ratios by which all four and change gears functioned. This made the R75 highly manoeuvrable and capable of negotiating most surfaces. Additional 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 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 developing a Z?ndapp-BMW hybrid (selected the BW 43), in which a BMW 286/1 side-car would be grafted onto a Z?ndapp KS 750 motorcycle. In addition they agreed that the produce of the R75 would cease once production come to 20,200 systems, and from then on point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, making 20,000 each year.
Since the concentrate on of 20,200 BMW R75's had not been reached, it remained in production before Eisenach stock was so badly ruined by Allied bombing that creation ceased in 1944. An additional 98 models were constructed by the Soviets in 1946 as reparations.
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