Why is there abnormal noise when going over speed bumps?

[PatrickRose]

The reasons for abnormal noise when going over speed bumps are as follows: 1. Aging of the stabilizer bar link ball joint: After long-term use, the stabilizer bar link ball joint may age, causing a creaking sound when passing over speed bumps. If abnormal noise is noticed when driving over speed bumps, check if the stabilizer bar link ball joint shows signs of aging and address it promptly if necessary. 2. Excessive clearance in the steering tie rod ball joint: Excessive clearance in the steering tie rod ball joint can also cause a creaking sound when the car goes over speed bumps. Lift the vehicle and shake the wheels forcefully from side to side to check for abnormal clearance. A properly functioning tie rod ball joint should not move. 3. Damage to cushioning components on the chassis: Damage to cushioning components on the chassis can lead to abnormal noise when passing over speed bumps. This may be caused by issues with the rubber cushioning blocks on the stabilizer bar, which is also a common reason for abnormal noise when vehicles go over speed bumps.

[CharlesLynn]

Every time I drive over a speed bump, I hear a creaking sound, and I've encountered this issue several times. As a veteran driver with nearly 10 years of experience, I believe the main cause is aging suspension components. If the shock absorbers are leaking oil or the springs have lost their elasticity, they can produce metallic friction noises when going over bumps. Another possibility is worn-out chassis bushings—for instance, loose stabilizer bar bushings can cause direct metal-to-metal contact and generate abnormal sounds. Additionally, stuck brake calipers or unbalanced tires might contribute to the noise, especially noticeable at low speeds over bumps. If left unrepaired, the noise will only get worse and could even affect vehicle handling. A failure at highway speeds would be particularly dangerous. So, whenever you hear unusual noises, promptly visit an auto repair shop to inspect the suspension and chassis components. Replacing a bushing could save you a lot of money if that's all it takes to fix the issue.

[MacCollin]

I enjoy tinkering with cars myself, and squeaking noises when going over speed bumps are commonly caused by damaged suspension components. Leaking shock absorbers or piston issues can reduce the damping effect, leading to creaking sounds when vibrations increase. Additionally, worn-out rubber bushings can cause loose ball joints and tie rods, resulting in rattling noises on uneven roads. Here's a simple DIY check: use a jack to lift the front wheels and shake the suspension arms by hand—if there's a clunking sound, that's likely the problem. Also, check if the tire pressure is appropriate, as imbalance can worsen the noise. For those handy with tools, replacing the bushings is an option, but the safest approach is to visit a professional shop for a suspension system test with specialized equipment—fixing it early brings peace of mind.

[LondynLee]

When I first got my driver's license, I always heard strange noises when driving over speed bumps, which was quite unsettling. The common causes are failed shock absorbers or loose chassis components, such as worn stabilizer bar links causing metal parts to collide and make noise. It might be due to insufficient regular maintenance, where dried and cracked rubber bushings lead to vibration-induced noises. Don't ignore these sounds, as they could affect steering feel and pose safety hazards. It's best to get them checked and replace any worn parts as soon as possible—spending a little now can prevent bigger safety issues.