Ceramic Brake Rotor, Checking: Chamfer

Chamfers -arrow- on the edges of the brake rotor are caused by mechanical damage.

Fig 1: Chips On Edge Of Brake Disc Are Caused By Mechanical Damage

Courtesy of AUDI OF AMERICA, LLC

The following are permitted:

• maximum width/depth = 2 mm.
• maximum length = 10 mm
• maximum number of chamfers on the brake rotor = 3

If any of these criteria are exceeded, the brake rotor must be replaced.