Patent ID: 8146719

Claim:
A brake rotor for a disc brake system of a motor vehicle, the disc brake system including a caliper, an inboard brake pad and an outboard brake pad, said brake rotor comprising: an inboard side rotor cheek having an inboard radial inner edge and an oppositely disposed inboard radial outer edge, said inboard inner and outer radial edges being mutually separated by an inboard rotor radial height, an inboard friction surface being located at said inboard side rotor cheek; and an outboard side rotor cheek having an outboard radial inner edge and an oppositely disposed outboard radial outer edge, said outboard inner and outer radial edges being mutually separated by an outboard rotor radial height, an outboard friction surface being located at said outboard side rotor cheek; wherein said outboard friction surface has formed therein a plurality of outboard brake rotor friction surface indent patterns disposed circumferentially around said outboard friction surface, all of said outboard brake rotor friction surface indent patterns being disposed closer to said outboard radial inner edge than to said outboard radial outer edge such that said outboard brake rotor friction surfaces originate substantially at said outboard radial inner edge generally outside said outboard friction surface and terminate remotely from said outboard radial outer edge generally inside said outboard friction surface, each said outboard brake rotor surface indent pattern being oriented at a predetermined outboard sweep angle with respect to a radiant of the rotor and extending a predetermined outboard radial height parallel to the radiant less than said outboard rotor radial height such that said plurality of outboard brake rotor friction surface indent patterns reduce radial taper wear of the outboard side brake pad of the disc brake system.