Reasons for a Clicking Sound When Braking in a Car

[Dana]

Car brakes making a clicking sound are mostly due to issues with the car's braking system. Below are detailed explanations and solutions for the reasons behind a clicking sound when braking: 1. Excessive wear on brake discs and brake pads: Both brake discs and brake pads are high-wear items. Every time the brakes are applied, these two components rub against each other, leading to natural wear over time. When the wear becomes excessive, unusual noises will naturally occur. Solution: Regularly inspect and replace brake discs and brake pads. 2. Improper installation of brake pads: If the brake pads are installed backward or if the model does not match, unusual noises may also occur. Solution: Visit a professional auto repair shop to have the brake pads reinstalled correctly.

[Eva]

The other day when I was driving, I also noticed a clunking sound from the brakes, which scared me into getting it checked immediately. The mechanic said the brake pads were worn to their limit, and the backing plate was already grinding against the brake disc. After replacing the new brake pads, the problem was indeed resolved. Additionally, if the brake discs develop grooves or become warped, stepping on the brakes will cause a clicking sound. If the suspension system is loose, it will clunk when going over bumps, but sounds when braking are mostly related to the braking system. By the way, when brake discs rust on rainy days, the first few brakes after starting the car will also clunk, but it will go away after driving for a while. Remember, clunking sounds vary by situation—the noise during slow braking feels different from sudden braking. It’s best to have it checked at a professional shop by lifting the car for a thorough inspection to be sure.

[LillianLynn]

This is a common issue I encounter when repairing cars. First, the brake caliper guide pins might be rusted and stuck, causing jerky movements and noise. Second, if the brake pad shims have fallen off, the metal-on-metal collision sound will be particularly noticeable. Third, if the brakes have been modified, improper installation of the bridge position might leave gaps, resulting in collision noises. Fourth, check if the brake disc mounting screws are loose; sometimes, wheel hub screws aren't tightened properly after a tire change, leading to similar sounds. Lastly, inspect the suspension arm bushings, as cracked bushings can cause displacement and strange noises during braking. I recommend focusing on checking the moving parts of the brake system and the suspension connection points.

[StMila]

Let me share some insights about the 'clunking' sound. It's normal for a new car to occasionally make noises during the break-in period, as the brake pads haven't fully seated yet. If the car has 20,000-30,000 km on it, there's an 80% chance it's the brake pad wear indicator scraping against the rotor - time for replacement. Pebbles stuck between the rotor and pad can also cause clunking; try sharply braking in reverse a couple times to dislodge them. Another possibility is the ABS system self-check sound, commonly heard during the first few brakes after a cold start. However, if you experience steering wheel vibration accompanied by clunking during high-speed braking, immediately check the brake rotor flatness - resurfacing or replacement will solve it.

[GiselleMarie]

I encountered this issue before when I changed the brake pads myself. First, the surface of the new brake pads was too hard and needed bedding in; driving for about 200 kilometers should solve it. Second, during installation, the caliper piston wasn't fully pushed back into position, causing a gap during braking that led to a knocking sound. Additionally, using aftermarket brake pads might result in larger shape tolerances, requiring the installation of anti-noise shims. Excessive wheel hub bearing clearance can also transmit abnormal noises—you can check this by lifting the car and shaking the tire sideways. However, the most troublesome issue is loose steering ball joints, which can cause a clunking noise when the weight shifts forward during braking.

[SanGavin]

Remember when picking up the kids from school, the brakes suddenly made a clunking noise, which turned out to be due to rust on the brake discs from rainy weather. However, persistent abnormal noises require special attention to five key points: improperly installed brake pad retaining springs causing metal-on-metal noise, poor caliper piston retraction leading to brake drag, ABS sensor interference from foreign objects, aging front suspension stabilizer bar bushings, and mismatched center bore on aftermarket wheels. Once, my car had a torn dust boot allowing dirt into the guide pins, which was resolved by cleaning and lubricating during maintenance. If you hear abnormal noises before taking the kids out, don't hesitate – the braking system is not something to take lightly.