Discard Diameter

226.30 mm

8.909 in

Inside Diameter

225.12 mm

8.863 in

Maximum Refinish Diameter

225.54 mm

8.879 in

Runout

0.15 mm

0.006 in

Wheel Cylinder Bore

23.80 mm

0.937 in

All brake drums and rotors have a discard dimension cast into them. This is a wear dimension and not a refinish dimension. Replace any drum or rotor which does not meet the specification.