GM Service Manual Online
For 1990-2009 cars only

Brake Drum Dimensions

Specification

Metric

English

Drum Diameter New

225.25 mm

8.868 in

Drum Discard Diameter

226.31 mm

8.909 in

Drum Maximum Diameter After Refinish

225.78 mm

8.889 in

Drum Maximum Radial Runout

0.104 mm

0.004 in

Drum Maximum Scoring

1.5 mm

0.059 in

Wheel Cylinder Bore Diameter

22.20 mm

0.874 in