Ceramic Brake Rotor Wear, General Information

WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The wear is determined by determining the brake rotor thickness "and" the wear value with the Carbon-Ceramic Brake Wear Tester: VAS6813 ; both must be measured three times respectively around the circumference.

The permitted brake rotor minimum thickness "min.th." and the wear value -C- are engraved on the brake rotor cup for the Carbon-Ceramic Brake Wear Tester: VAS6813 .

Fig 1: Wear Indicator A Through D

Courtesy of AUDI OF AMERICA, LLC

The wear value -C- is different depending on the brake rotor and the measurement location.

NOTE:

If the brake rotor thickness "min.th." falls short at one measuring point, the brake rotor must be replaced.

"or"

if one of the three wear values -C- is reached or falls short when determining the wear using the Carbon-Ceramic Brake Wear Tester: VAS6813 , the brake rotor must be replaced.

Fig 2: Wear Indicator A Through D

Courtesy of AUDI OF AMERICA, LLC

NOTE:

The wear value -C- is different depending on the brake rotor.

CAUTION:

Risk of accident due to uneven braking.

- If a brake rotor is damaged or worn, check the other brake rotors for damage and wear.