Cleaning And Inspecting the Brake Disc And Hub
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Cleaning is important for the prevention of brake disc wobble (lateral runout).
Check that the hub flange is clean.
Remove rust with steel wool or a wire brush.
Inspect the hub.
If the hub is damaged, measure its lateral runout. See Measuring Lateral Runout In Hub (Front/Rear) .