How Often Should Brake Discs Be Replaced?
2 Answers
Brake discs should be replaced every 100,000 kilometers. The exact replacement time and mileage depend on the thickness of the brake discs. To check if the brake pads are worn thin, you can use a small flashlight for inspection. When the black friction material of the brake pads is nearly worn out and the thickness is below 5 millimeters, it's time to consider replacement. A brake disc is a round disc that rotates as the vehicle moves. The brake caliper clamps the brake disc to generate braking force. When you press the brake pedal, the caliper clamps the disc to slow down or stop the vehicle. Brake discs offer excellent braking performance and are easier to maintain compared to drum brakes.
I've been driving for over a decade, and changing brake rotors isn't something you can generalize—it really depends on your driving habits and vehicle usage environment. Generally speaking, they should be inspected every 60,000 to 80,000 kilometers. But for someone like me who does a lot of stop-and-go city driving, the rotors wear out faster and might need replacement at around 40,000 kilometers. If you mostly drive long highway distances with minimal braking, they can last up to 100,000 kilometers. Worn brake rotors lead to longer stopping distances, vehicle vibration, and even strange noises. I once had brake failure on a mountain road—it was terrifying and nearly caused an accident. That's why I now measure rotor thickness every six months at the repair shop; the standard is not letting it go below 70% of the original thickness. Don't wait until they're completely worn out—safety comes first. For routine checks, pay attention if the brake pedal feels soft or you hear screeching sounds, and address it immediately. Remember, when replacing rotors, it's best to change the brake pads at the same time to avoid future hassles and protect the entire system.
