Rotor Tolerance and Surface Finish

In the manufacturing of brake rotors, tolerances of the braking surfaces for flatness, thickness variations and lateral runout are held very closely. The maintenance of close tolerances on the shape of braking surfaces is necessary to prevent roughness in braking performance. In addition to these tolerances, the surface's finish must be held to a specified range. The control of the braking surface finish is necessary to avoid pulls, erratic performance, and to extend lining life. Light scoring (depth) of the rotor surfaces not exceeding specifications (which may result from normal use) will not affect brake operation.

Rotor Surface Finish Depth (Maximum): 0.38 mm (0.015 inch)