The BMW R75 is a World Warfare II-era motorcycle and sidecar blend made by the German company BMW.
Inside the 1930s BMW were creating a range of popular and highly effective motorcycles. In 1938 development of the R75 started in respond to a request from the German Military.
Preproduction models of the R75 were driven by the 750 cc side valve engine, that was based on the R71 engine motor. However it was quickly found essential to design an all-new OHV 750 cc engine motor for the R75 unit. This OHV engine later became the basis for succeeding post-war twin BMW engines like the R51/3, R67 and R68.
The 3rd side-car wheel was powered with an axle connected to the rear wheel of the motorcycle. These were installed with a locking differential and selectable highway and off-road products ratios by which all and reverse gears did the trick. This made the R75 highly manoeuvrable and capable of negotiating most floors. A few other 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 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 Military, agreed upon standardization of parts for both machines, with a view of eventually making a Z?ndapp-BMW hybrid (specified the BW 43), when 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 reached 20,200 products, and after that point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, developing 20,000 every year.
Since the concentrate on of 20,200 BMW R75's had not been reached, it remained in production before Eisenach manufacturing plant was so terribly ruined by Allied bombing that production ceased in 1944. An additional 98 units were built by the Soviets in 1946 as reparations.
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