Hayes Lemmerz has decided to close two North American plants, one producing steel wheels, another producing aluminium wheels. The aluminium wheel plant is at Somerset, Kentucky (formerly Alumitech), which the world’s largest wheel manufacturer only took over in 1998 from a 50/50 joint venture. The Somerset plant manufactured mainly one-piece cast wheels for the Mercedes M-class. In future the Hayes Lemmerz factory in Hoboken (Belgium) and Ronal’s factory in Mexico will supply the M-Class with aluminium wheels.