Wear Indicators, Checking

WARNING: This page is about a different car, the 2023 Audi SQ8, 2023 Audi RS Q8, and 2023 Audi Q8. However, it is still accessible from the selected car via links, so may be relevant.

TIP:

The wear indicators are not present on all brake rotors.

Refer to CERAMIC BRAKE ROTOR, DETERMINING WEAR USING Carbon-Ceramic Brake Wear Tester

The wear indicators on the brake rotor friction surface are positioned 120 degrees from each other.

The wear indicators -arrow- can be recognized by their different color.

Fig 1: Identifying Wear Indicator By Difference In Color To Rotor Surface Metal
Courtesy of AUDI
On the front and back side of the brake rotor are three wear indicators.

Wear Indicator OK

Fig 2: Identifying OK Wear Indicator

Courtesy of AUDI

Burned-Out Wear Indicator, Example 1

Fig 3: Identifying Burned Out Wear Indicator

Courtesy of AUDI

With increasing wear on the brake rotor, a dark burned-out recess develops on the wear indicators.
Even if only one of the six indicators is completely burned out, the ceramic brake rotor must be replaced.

Burned-Out Wear Indicator, Example 2

Fig 4: Identifying Burned Out Wear Indicator

Courtesy of AUDI

With increasing wear on the brake rotor, a dark burned-out recess develops on the wear indicators.
Even if only one of the six indicators is completely burned out, the ceramic brake rotor must be replaced.

CAUTION:

Risk of accident due to insufficient braking action on worn ceramic brake rotors.

Reusing ceramic brake rotors that have reached the wear limit is not permitted.

- Immediately replace the ceramic brake rotors once they have reached one of the wear limits defined below.

CAUTION:

Risk of accident due to uneven braking.

- Always replace brake rotors on both sides of the axle.

- Also replace the brake pads on both sides of the axle.