BMW
After the end of World War I in 1918, BMW was forced to cease aircraft engine production by the terms of the Versailles Armistice Treaty. To remain in business, BMW produced farm equipment, household items and railway brakes. In 1922, former major shareholder Camillo Castiglioni purchased the rights to the name BMW, which led to the company descended from Rapp Motorenwerke being renamed Süddeutsche Bremse AG (known today as Knorr-Bremse). Castiglioni was also an investor in another aircraft company, called "Bayerische Flugzeugwerke", which he renamed BMW.The disused factory of Bayerische Flugzeugwerke was re-opened to produce engines for buses, trucks, farm equipment and pumps, under the brand name BMW. BMW's corporate history considers the founding date of Bayerische Flugzeugwerke (7 March 1916) to be the birth of the company.
BMW in motorsport
BMW enjoyed a dominant period in motorcycle racing prior to the Second World War with notable achievements such as Georg Meier's victory in the Senior Race at the 1939 Isle of Man TT. Post war BMW success mainly revolved around Sidecar racing, the marque becoming the premier machinery on the Snaefell Mountain Course, the smaller Clypse Course and from 1949 until the mid 1970s the Sidecar World Championship. BMW-powered sidecars have won numerous World Championships, notable competitors being Rolf Steinhausen, Klaus Enders and Max Deubel. The pre-war dominance enjoyed in motorcycle road racing faded post-war, the main road racing campaign centered on Production Bike Racing with Helmut Dähne campaigning the marque with BMW's best post-war finish until the second decade of the 21st Century being a 3rd-placed position in the 1974 Production 1000cc TT.
BMW officially resumed road racing in 2009, entering the World Superbike Championship with its  BMW S1000RR. This resumption also saw its official re-introduction at the Isle of Man 
the 2014 Isle of Man TT seeing Michael Dunlop campaigning BMW machinery in the Superbike, Superstock and Senior TTs. Dunlop took victory in the three main solo races, securing BMW's first win in the Senior TT since that of Georg Meier in 1939. Dunlop again took victory in the 2016 Superbike TT during the process of which he also set a new outright lap record for the Snaefell Mountain Course at 130.306 mph.