Rotor Minimum Thickness
Measure the rotor thickness (2) using an appropriate tool (1) at the center of the brake rotor contact surface. Replace the rotor if it is worn below minimum thickness or if machining the rotor will cause its thickness to fall below specifications.
CAUTION:
Do not machine the rotor if it will cause the rotor to fall below minimum thickness.
Most minimum thickness specifications (1) are cast into the rotor's unmachined surface. Some brake rotors (2) have the minimum thickness specification located elsewhere. Refer to the following paragraph. Limits can also be found in the specification table. Refer to TECHNICAL SPECIFICATIONS .
The minimum thickness specification is stamped into the outer diameter edge (1) (along vented end) of the disc.