Brake Rotor/Disc: Testing and Inspection

Before this inspection, brake pads must be removed

Check disc surface for scratches in wearing parts. Scratches on disc surface noticed at the time of specified inspection or replacement are normal and disc is not defective unless they are serious. But when there are deep scratches or scratches all over disc surface, replace it. When only one side is scratched, polish and correct that side.

Disc thickness
Standard: 20 mm (0.79 inch)
Limit : 18 mm (0.71 inch)





To measure deflection of disc, take measurement at 2 points on its periphery and center with dial gauge while rotating it.

Limit on disc deflection: 0.1 mm (0.0039 inch)

NOTE: Check front wheel bearing for looseness before measurement.