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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> General, Technical Data (Brake System) >> 00 General, Technical Data >> Brake Inspection >> CERAMIC BRAKE ROTOR, DETERMINING WEAR USING Carbon-Ceramic Brake Wear Tester: VAS6813 >> Ceramic Brake Rotor Wear, General Information

Ceramic Brake Rotor Wear, General Information

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
GWWA00-11145Courtesy 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
GWWA00-11145Courtesy 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.