Maximum Diameter/Discard Diameter

Brake Drums:
Inside Diameter 225.12 mm (8.863 inch)
Runout 0.15 mm (0.006 inch)
Maximum Rebore Diameter (see note**) 226.57 mm (8.920 inch)
Discard Diameter (see note**) 226.30 mm (8.909 inch)
Wheel Cylinder Bore Diameter 22.20 mm (0.874 inch)
Caliper Bore Diameter 42.0 mm (1.654 inch)
**All brake drums have a discard dimension cast into them. Replace any drum that does not meet this specification. After refinishing drums, replace any drum that does not meet the maximum rebore diameter or minimum thickness after refinish specifications.