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Home >> Kia >> 2016 >> Optima SX Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 73 (Active Hydraulic Boost (AHB) System (HEV)) >> Front Disc Brake >> Repair Procedures >> Inspection >> Front brake disc thickness check

Front brake disc thickness check

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  1. Check the brake pads for wear and fade.
  2. Check the brake disc for damage and cracks.
  3. Remove all rust and contamination from the surface, and measure the disc thickness at 8 points, at least, of same distance (5mm) from the brake disc outer circle.

    Front brake disc thickness 

    • Standard: 28 mm (1.10 in)
    • Service Limit: 26.4 mm (1.04 in)

    Deviation: Less than 0.005mm (0.0002in)

    Fig 1: Measuring Front Brake Disc Thickness
    G11816799Courtesy of KIA MOTORS AMERICA, INC.
  4. If wear exceeds the limit, replace the discs and pad assembly left and right of the vehicle.