PowerStop: Disc Thickness Variation

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