Disc Plate Thickness Inspection

WARNING: This page is about a different car, the 2020 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

Excessive runout may result if the disc plate is removed from the vehicle then machined. Machine the disc plate while installed on the vehicle.

Measure the thickness of the disc plate.
Minimum front disc plate thickness

20.0 mm {0.79 in}

Minimum front disc plate thickness after machining using a brake lathe on-vehicle

20.8 mm {0.819 in}
- If the thickness is not within the specification, replace the disc plate. (See FRONT BRAKE DISC REMOVAL/INSTALLATION (WITH SINGLE PISTON FLOATING CALIPER) .) (See FRONT BRAKE DISC REMOVAL/INSTALLATION (WITH 4-POT OPPOSED PISTON CALIPER) .)