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.
(JA1) LIGHT DUTY (FRONTS) (JA2/JA8) MEDIUM AND HEAVY DUTY (FRONTS) REAR
Rotor Diameter 9.72 Inch (in)10.24 Inch (in)10.237 Inch (in)
Lateral Runout 0.004 Inch (in)0.004 Inch (in)0.004 Inch (in)
Thickness Variation 0.0005 Inch (in)0.0005 Inch (in)0.0005 Inch (in)
Rotor Thickness (Max) 0.885 Inch (in)1.043 Inch (in)0.494 Inch (in)
Minimum Thickness after Refinish 0.83 Inch (in)0.972 Inch (in)0.439 Inch (in)
Discard Thickness 0.815 Inch (in)0.957 Inch (in)0.425 Inch (in)
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