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Home >> Hyundai >> 2020 >> Sonata SEL >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Except HEV) >> Rear Disc Brake >> Repair Procedures >> Inspection >> Rear Brake Disc Thickness Check

Rear Brake Disc Thickness Check

  1. Check the brake disc for damage and cracks.
  2. Remove all rust and contamination from the surface, and measure the disc thickness at 24 points, at least, of same distance (5 mm) from the brake disc outer circle.

    Rear Brake disc thickness 

    Standard: 11 mm (0.43 in)

    Service limit: 9.4 mm (0.37 in)

    Deviation: less than 0.015 mm (0.0004 in)

  3. If wear exceeds the limit, replace the discs and pad assembly left and right of the vehicle.