Brake Rotor/Disc

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All rotors have a discard dimension cast into them. This is a wear dimension and not a refinish dimension. Any rotor which does not meet the specification should be replaced.
Rotor Diameter 9.72 Inch (in)
Lateral Runout 0.004 Inch (in)
Thickness Variation 0.0005 Inch (in)
Rotor Thickness (Max) 0.885 Inch (in)
Minimum Thickness after Refinish 0.83 Inch (in)
Discard Thickness 0.815 Inch (in)