BMW M : The legacy

[avinash]

BMW M GmbH is a subsidiary of BMW AG.
BMW M, also known as M-Technik or just "M" (for Motorsport) was initially created to facilitate BMW’s racing program, which was very successful in the 1960s and 1970s. As time passed, BMW M began to supplement BMW's vehicles portfolio with specially modified higher trim models, for which they are now most known by the general public. These M-badged cars traditionally include modified engines, transmissions, suspensions, interior trims, aerodynamics, and exterior modifications to set them apart from their counterparts. All M models are tested and tuned at BMW's private facility at the Nürburgring racing circuit in Germany.

Here is a video I found at http://www.BMW.tv about the history of M.