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Minimum rotor thickness


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Posted

Anyone know the minimum rotor thickness for these trucks? I don't have my truck with me today so can't look. I plan to upgrade the brakes all around in 15-20k miles but have some uneven wear on the front rotors. Was hoping I could get them cut to get buy myself a few months.

Posted

Front:

 

Discard Thickness: 1.102 in.

 

Rotor Minimum Allowable Thickness After Refinish: 1.122 in.

 

Rotor Thickness (new): 1.181 in.

 

Rotor Maximum Allowable Thickness Variation: 0.0007 in.

 

Rear:

 

Discard Thickness: 0.728 in.

 

Rotor Minimum Allowable Thickness After Refinish: 0.748 in.

 

Rotor Thickness (new): 0.787  in.

 

Rotor Maximum Allowable Thickness Variation: 0.0007 in.

 

The minimum thickness should be cast right into the area around the rotor hat. Can be hard to read if they get rusty.

Posted

These trucks have a special coating on the rotors to make them last longer (google "GM FNC"). You are not supposed to resurface them since it machines the coating away. But if you are planning to replace them with new rotors and just want to last a few months you should be okay.

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