What Causes the Squeaking Noise in BMW Brakes?
2 Answers
BMW brakes may produce a squeaking noise due to the following reasons: 1. Excessive wear of brake discs and brake pads: Both brake discs and pads are high-wear components that undergo friction with each brake application. Over time, wear naturally occurs, and when it becomes excessive, abnormal noises will arise. Therefore, regular inspection and replacement are necessary. Typically, brake pads should be replaced every 60,000-80,000 kilometers, while brake discs require replacement every 100,000-120,000 kilometers. 2. Improper installation of brake pads: If the brake pads are installed incorrectly or the model does not match, abnormal noises may also occur. In such cases, the brake pads should be reinstalled. When installing brake pads, it is advisable to have the work done at a professional auto repair shop, especially for owners who have previously replaced brake pads at roadside stalls, as extra caution is warranted.
When driving my BMW, the brakes always make a squeaking noise, which was quite annoying at first. It could be that the brake pads are worn thin or rusted, especially after sitting for a long time in the rain, the sound becomes more noticeable. BMW's braking system is precise, but dust accumulation or oil contamination getting into the gaps can also cause noise. I once experienced severe squeaking during low-speed braking, and upon checking, found that the brake disc surface was uneven with some small pits, causing the squeak during friction. Another possibility is that the brake caliper has loosened and needs inspection. Don't delay, as this can affect braking performance—it's dangerous if you can't brake effectively at high speeds. I tried lightly pressing the brakes a few times to see if it could remove surface rust, but it's best to go directly to a professional shop for inspection and replacement. Regular maintenance can prevent this issue; my experience suggests cleaning brake components every six months.
