What to Do When There is Friction Between Brake Pads and Brake Discs?
3 Answers
If there is abnormal friction noise between the brake discs and brake pads, it is recommended to have them checked at a 4S shop. If a metallic scraping sound (which could also be due to the initial break-in period after installing new brake discs) accompanies light braking, the brake pads must be replaced immediately. Additional information is as follows: 1. Since brake discs are significantly more expensive than brake pads, it is advisable to regularly inspect the brake pads to avoid damaging the brake discs. 2. The abnormal noise caused by this may disappear after some wear. If braking feels difficult, it might indicate that the brake pads have largely lost their friction capability, necessitating immediate replacement. After all, some low-quality brake pads contain hard spots, which can also cause abnormal noise.
I take the issue of brake pads and rotors rubbing very seriously. As a frequent long-distance driver, I've experienced similar situations. Friction is a normal part of brake system operation, but if there's abnormal noise when the car is stationary or poor braking performance, that's not normal. It could be that the brake pads are worn too thin, deep grooves have formed on the rotors, or even that the caliper bracket has rusted, causing continuous contact between pads and rotors. This can cause fuel consumption to skyrocket and poses a safety threat. I recommend you immediately find a safe place to pull over and stop driving. Then check around the tires for obvious scratches or foreign objects. Get it to a professional repair shop as soon as possible—they can accurately diagnose whether you need new brake pads or rotor resurfacing. Remember, don't delay to avoid turning a minor issue into a major repair. When driving on the road, brake problems directly concern lives—there's no room for carelessness.
In my opinion, friction between brake pads and rotors is a common issue that must be addressed promptly. As someone who enjoys tinkering with cars, I've fixed similar problems myself multiple times. Friction during normal braking is by design, but if there's squealing or the wheels don't turn smoothly, it could mean the brake pads have worn down to the warning indicator or the rotors are warped. Lack of lubrication on guide pins can also cause abnormal contact. This not only affects driving comfort but also increases tire wear. Last time I dealt with this, replacing the brake pads and resurfacing the rotors solved the problem. I recommend first checking the rotor's flatness by gently running your finger over it to feel for unevenness. Don't force driving it - get a full inspection at a repair shop. Addressing it early saves fuel costs and safety risks.
