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Is it necessary to replace brake pads when changing brake discs?

1 Answers

VivienneDella

07/29/25 8:01pm

Replacing brake discs does not necessarily require replacing brake pads. If the brake pads still have sufficient thickness, they can be retained. The function of brakes is to reduce speed or bring the vehicle to a stop. Their working principle involves converting the kinetic energy of the moving vehicle into thermal energy through friction between the brake pads and brake drums, as well as between the tires and the road surface, thereby slowing down or stopping the car. Causes of brake failure include: 1. Impurities or poor sealing in the brake master cylinder; 2. Failure of the vacuum booster pump; 3. Contaminated brake fluid; 4. Oil leakage from the brake master cylinder or wheel cylinder; 5. Air leakage from the air reservoir or pipeline connections; 6. Severe overloading; 7. Carbonization of the brake drum; 8. Insufficient brake fluid in the brake master cylinder; 9. Wear of the brake master cylinder piston.

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