BMW M GmbH, formerly known as BMW Motorsport GmbH, is a subsidiary of 
		BMW AG that manufactures high-performance luxury cars. BMW M ("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 vehicle 
		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. 
		
Official website: 
BMW M