Brakes Inspection: Chamfer

Chips on the edge -arrow- 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, replace the brake rotor.

Replace The Brake Rotors On Both Sides Of The Axle When: 

• the brake rotors must be replaced because they are worn,
• the replacement brake rotor has been technically modified, which can be determined by the revised part number.

Brake pads likewise must always be replaced on both sides of the axle.