From BMW Tech
- For the 1970s 750cc motorcycle see BMW R75/5
|Engine||745 cc flat-twin (OHV)|
|Power (physics)||26 hp (19 kW)|
|Weight||420 kg (930 lb)|
BMW were already producing a number of popular and highly effective motorcycles, and developed the R75 in response to a request from the German army to make a machine more capable in Off-roading conditions, the Zündapp KS 750. BMW copied the technically advanced Zündapp KS 750 in which the third side-car wheel was driven from an axle connected to the rear wheel of the motorcycle, effectively making it a Tricycle. Fitted with a Locking differential and selectable road and off-road Gear ratio the R75 was highly manoeuvrable and capable of negotiating most surfaces. It was even fitted with a reverse gear.
The BMW R75 and its rival the Zündapp KS 750 were both widely used by the Wehrmacht in the Eastern Front (World War II) and North African campaign, though after a period of evaluation it became clear that the Zündapp was the superior machine. In August 1942 Zündapp and BMW, on the urging of the Army, agreed upon standardization of parts for both machines, with a view of eventually creating a Zündapp-BMW hybrid, in which a 286/1 side-car would be grafted onto a Zündapp KS 750 motorcycle. They also agreed that the manufacture of the R75 would cease once production reached 20,200 units, and after that point BMW and Zündapp would only produce the Zündapp-BMW machine, manufacturing 20,000 each year.
Since the target of 20,200 BMW R75's was not reached, it remained in production until the Eisenach factory was so badly damaged by Strategic bombing during World War II that production ceased in 1944. A further 98 units were assembled by the Soviets in 1946 as reparations.
However the standardisation programme meant that machines that were produced by BMW and Zündapp used 70% of the same components. This simplifies the supply of spare parts for these vehicles, many of which are still in the hands of historic motorcycle enthusiasts. These vehicles are still highly desirable as collector's items because of their complex and durable technology, and are correspondingly expensive. A well-restored R75 can be still used for everyday purposes, on or off-road without problems.
In 1954 a small number of modified R75's was produced at Eisenach (then in Soviet-controlled German Democratic Republic) for testing under the designation AWO 700, but were not put into full production.
- Janusz Piekałkiewicz (1991). BMW Motorcycles in World War II: R12/R75. Schiffer Military History. ISBN 978-0-887-40306-4.