PowerStop: Disc Thickness Variation

May 7, 2020

 

If your brake pedal feels like it’s pulsing or pausing, you might have brake Disc Thickness Variation (DTV). This is a small variation in the thickness of the fiction rotor plates. This is usually cause by the rotors receiving uneven wear.

Disc Thickness Variation causes:

  • Pedal pulsation, which occurs when the rotor rotates through the brake pads and calipers. It is more noticeable with heavy brakes
  • Steering wheel oscillation (shaking or shuddering)
  • Vibration, the thin and thick sections of the rotor slip in between brake rotors

How to Prevent Disc Thickness variation?

  • Install brake system properly, especially brake rotors, pads, and calipers
  • Clean the wheels and rotors thoroughly
  • Use a wrench to tighten the lug nuts to ensure lug nut torque
  • Follow break-in procedure
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