Supplier Hayes Lemmerz Intl. Inc. has joined with the American Iron and Steel Institute (AISI) to develop a lightweight “microalloy” steel wheel that promises 25% in weight savings, or a whopping 5 lbs. (2.3 kg) per wheel. The Northville, MI, supplier and the AISI employ ultra high-strength materials and a “spin-thinning” process to vary the thickness of sections of the wheel relative to the strength required. “Our wheels are going on a diet, like a lot of Americans,” says Ronald ...

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