Why is there noise when braking the car?

[Karl]

The reasons for noise when braking a car are as follows: 1. Normal ABS activation: Cars equipped with ABS may produce abnormal noises during braking because the ABS system works by repeatedly locking and releasing the wheels. When the ABS is active, you may hear a clunking sound, which is normal and does not affect normal driving. 2. Rusty brake pads: Cars parked outdoors for a long time may experience rust on the brake pads. If the noise is caused by rust, it usually disappears after driving for a short while. If the noise persists, you can apply specialized lubricating oil at the connection between the brake pads and the brake caliper. 3. Newly replaced brake pads: When new brake pads are installed, they need to break in with the brake discs, which may cause noise. This is normal and nothing to worry about. 4. Excessive wear on brake discs or pads: Brake pads wear down over time, and when they reach a certain level of wear, they may produce noise. This situation requires attention, and replacement should be done based on actual driving conditions.

[OJanelle]

Recently, I also encountered a situation where my car's brakes were making noise, possibly due to worn brake pads or new parts still in the break-in period. It's quite common for brakes to squeak when the car is first started, especially after rainy days when the brake discs have some rust, which disappears after some friction. If the noise becomes louder or more screeching, it might be due to small stones or foreign objects stuck in the brake system, and they should be removed as soon as possible to prevent damage to the brake discs. I make it a habit to regularly check the thickness of the brake pads and have them measured at a repair shop at least every six months, as deteriorating braking performance can be very dangerous. Don't ignore these small issues—they are related to driving safety, and simple maintenance can save you from costly repairs.

[LeAthena]

To be honest, I usually enjoy studying the mechanical components of cars. Brake noise is mostly caused by minor vibrations from the friction between the brake pads and rotors. It's quite common for new brake pads to make noise—this is part of the normal break-in process, and they often quiet down after a few hundred kilometers. If the noise is sharp or persistent, it might indicate uneven rotors, rust buildup, or debris stuck between the components. Try using some brake cleaner to clean the rotor surface yourself, and check the remaining thickness of the brake pads. If they're below 2mm, it's time for a replacement. Regular maintenance can extend the lifespan of these parts, and I've noticed that switching to high-quality brake pads significantly reduces noise.

[McAnna]

I believe this issue directly relates to safety. Any abnormal brake noise must be addressed promptly. The most common cause is excessively worn brake pads - when they become too thin, not only does the noise become harsh, but braking distance is also affected. If you hear brief squeaking when starting after rain, that's just rust being scrubbed off the rotors and will normalize shortly. However, persistent loud noises indicate potentially serious malfunctions. My personal driving practice is to pull over immediately for inspection upon hearing unusual sounds - never continue driving with compromised brakes. It's advisable to replace brake pads every few tens of thousands of kilometers to prevent sudden failures that could cause accidents.

[LilyLee]

In my daily car maintenance experience, brake noise should be assessed comprehensively. Some noise is inevitable when new brake pads are first used, but it usually disappears after normal break-in. It's also common to hear friction noise from rust on the disc surface after rain or prolonged parking. However, if foreign objects like sand particles get into the brake system, the squeaking can become more severe. I recommend cleaning the brake discs after each car wash, using high-pressure water to remove dirt, which can reduce noise frequency. Have your brake system professionally inspected every six months to ensure everything is in order - this saves both money and peace of mind.

[ElianaLynn]

When I first learned to drive, I used to get nervous at the sound of braking too. Later, I learned that most of these sounds are normal phenomena. For example, newly replaced brake pads may squeak for the first few days as they break in; a brief sound when starting after rain is due to rust on the brake discs, which quiets down once worn off. Occasionally, a small stone stuck in the brake gap might cause a squeak that disappears without issue, but if the sound persists or becomes louder, it's time to be cautious—it could mean the brake pads are worn too thin. Remember to regularly check the thickness of the brake pads; don't wait until a critical moment when the brakes might fail. Safety first—I learned this from experience.