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Front Brake Disc Thickness Check

WARNING: This page is about a different car, the 2009 Kia Optima and 2009 Kia Magentis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove all rust and contamination from the disc surface, and then measure the disc thickness at 8 positions at least.

    Front brake disc thickness

    Standard value : 26.0 mm (1.02 in)

    Limit : 24.4 mm (0.96 in)

  2. Thickness variation should not exceed 0.005 mm (0.0002 in) (circumference) and 0.01 mm (0.0004 in) (radius) at any directions.
  3. If wear exceeds the limit, replace the discs and pad assemblies for left and right of the vehicle.
Fig 1: Checking Front Brake Disc Thickness
G06366812Courtesy of KIA MOTORS AMERICA, INC.
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