Lighter Steel And Alloy Wheels
Hayes Lemmerz is the world’s leading global manufacturer of automotive and commercial highway wheels and one of only a few companies producing wheels from both steel and aluminium. Regarding steel wheels, the company, whose headquarters are in the USA, is the worldwide market leader. Regarding aluminium wheels, Hayes Lemmerz is among the leading manufacturers in Europe. Recent years have seen a move from steel to aluminium wheels in original equipment. Looking purely at price, the steel wheel is absolutely unrivalled, but obviously the two criteria of weight and styling have proved more important to the car manufacturers. Realising that it was not enough that the steel wheel is cheaper, the manufacturers decided to become competitive also in the matter of weight. With its newest development of a steel structure wheel, Hayes Lemmerz has attained this target; this kind of wheel is now fitted in a 16 inch size on the newest Ford Mondeo model. But it must be said that is was not only an achievement of the wheel company but also for the producers of new kinds of steel which gives the wheel more rigidity and stability than before and offers the opportunity to make the wheels thinner and therefore lighter. Regarding styling, Hayes Lemmerz tries to mimic the smart aluminium wheels with new finishes that look like aluminium or chrome or are even coloured. Another opportunity is to create a very well-fitting wheel cap. Being also one of the most sophisticated aluminium wheel manufacturers, Hayes Lemmerz tried to develop lighter alloy wheels too. One competitor (Stahlschmidt & Maiworm) has already made much progress with hollow spokes and this kind of wheel is fitted on the top models of Porsche, Audi, and Mercedes-Benz. The idea of Hayes Lemmerz engineers was not to use the spokes but the rim bead section for cavities: they call the invention “Hollow-Hump Technology”.