In 1928, the BMW R 57 replaced the BMW R 47 as the sports model in the 500 cc class. The new designation suggested a new model but there were no major innovations. The only remarkable feature was a larger carburettor on the engine side, while an enlarged brake drum was now mounted in the front wheel. Alongside the ride characteristics and the most important technical data, the price at 1,850 reichmarks also remained stable. The BMW R 57 was still 250 reichmarks cheaper than the second sports model available in 1928, the BMW R 63.