Note. The operations described below are to be performed with the brake disc installed to the wheel.
Check for wear measuring disc thickness with a micrometer gauge at different positions along the disc. When a disc is worn beyond the service limit even at just one position, the disc must be replaced.
Disc thickness limit: 4.5 mm.
Check for disc run-out using a dial gauge. Replace disc when the maximum run-out measured exceeds the disc run-out limit; see 7.7.4.
Disc run-out limit: 0.3 mm.