What Causes Brake Disc Noise While Driving?
3 Answers
The causes of brake disc noise while driving include normal ABS activation, rust on brake pads/discs, excessive wear of brake discs and pads, and installation issues. Below are detailed explanations for each cause: The ABS operation process is actually a cycle of locking, releasing, locking, and releasing, keeping the vehicle in a state of near-lock rolling. Therefore, when ABS is activated by sudden braking, noise is normal, and pressing the brake pedal fully can resolve it. After prolonged parking, especially in humid weather or after rain, some rust or dirt may form on the brake discs or pads. Driving for a while can solve this, or applying butter or specialized lubricant at the connection between the brake pads and calipers may help. Both brake discs and pads are high-wear components. Every time you brake, these two parts experience friction, leading to wear over time. Excessive wear naturally causes noise, so regular inspection and replacement are necessary. Typically, brake pads should be replaced every 60,000-80,000 km, while brake discs last 100,000-120,000 km. Incorrect installation or mismatched models of brake pads can also cause noise. Reinstalling the brake pads may resolve this. Owners should have brake pads installed at professional auto repair shops, especially those who have had them replaced at roadside stalls, as extra caution is needed.
A few days ago, my car's brakes also made strange noises, and I think there are quite a few possible reasons. Worn brake pads are the most common—when they get thin from use, they squeak during friction. The brake discs might be uneven or scratched, trapping small stones or dust, which causes noise. Sometimes, water gets into the brake system, making the noise louder when driving after getting wet. As a car owner, I've checked it myself to save money, but without the right tools, a thorough fix isn't possible. Safety is crucial—faulty brakes pose significant risks. I recommend regular maintenance, checking the brake pad thickness, and replacing them if they're too thin. City driving accumulates more dust, so cleaning the brakes during car washes helps. Addressing issues promptly ensures a safer and more worry-free drive.
Last time I drove, there was an unusual noise when braking, which immediately put me on alert. Possible causes include hardened brake pads increasing friction over time, rusted or worn brake discs causing uneven surfaces and noise, or dust and small particles getting stuck and exacerbating the issue. Safety comes first—longer braking distances are dangerous, especially on rainy nights with poor visibility. I promptly took the car to the repair shop, spent some money on replacing parts, and resolved the problem. Prevention is key: keep the car clean and regularly check the brake system—don't wait for an issue to arise. Road safety is no small matter; developing good habits reduces risks.
