M (Motorsport) series is a range of high performance models that were firstly created as a racing models and later it was introtuced as a more powerful models based on other models of different series of BMW. Cars are produced by branch of BMW – BMW M GmbH (it was founded in 1972). Company also produces motorcycles. Models differs from original ones that they are made from by having modified engines that generates more power, transmissions, suspensions and it also can be recognized by having different exterior and interior.