Vehicle manufacturers (VMs) are driven by the need to reduce the weight of the vehicles they produce, which, in tandem with improved aerodynamics and low rolling resistance, allows them to reduce the emissions they emit and the fuel they consume.

A recent example of the extreme lengths VMs will go to in pursuit of light-weighting is demonstrated by the Bi-Metal brake discs fitted to several models in the BMW range. By changing the material specification of the disc’s ‘top hat’ from cast-iron to aluminium which is now riveted onto a cast-iron friction face, BMW have created a completely new concept for everyday automotive applications, in the form of a two-piece composite design.

Distributors will be pleased to know therefore, that this new composite brake disc design, patented by BMW, is now available to the aftermarket from Borg & Beck.

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