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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 54 (46 Brakes - Brake Mechanism 3.0L (Eng Code MDK.KA) -- 992 - 911 CARRERA (992)) >> WM, 465304 Measuring Rear Brake Discs >> Measuring Rear Brake Disc >> Measuring Rear Brake Disc - Minimum Thickness

Measuring Rear Brake Disc - Minimum Thickness

WARNING: This page is about a different variant/trim than selected.
  1. Measure the brake disc using a suitable micrometer screw at at least three different places, offset by 120° -Arrows-  .
    G15521190Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Wear areas on brake disc friction surface

  2. If the measured value is below the wear limit at one or more measuring points:

    Replace brake disc.

    465319 REMOVING AND INSTALLING REAR BRAKE DISC 

    mm 

  mm 
Brake disc thickness, rear:  > Measured value 28 mm 
Maximum thickness tolerance of brake discs:  > Measured value 0.02 mm