What Causes the Abnormal Noise When a Car Goes Over Speed Bumps?

[DeMaximus]

There are many reasons for abnormal noise when a car goes over speed bumps, mainly including faulty car shock absorbers, detached exhaust pipes, or improperly installed brake pads. Faulty Car Shock Absorbers: When the bearings of the car shock absorbers have issues, significant abnormal noise will occur when the vehicle passes over bumpy roads. In this case, it is necessary to go to a repair shop or 4S store for professional inspection and repair. Detached Exhaust Pipe: If the car has been used for a long time, the exhaust pipe may detach due to aging. When the car goes over speed bumps, the exhaust pipe area will produce a "clanging" noise. The solution to this problem is simple—just re-secure the exhaust pipe. Improperly Installed Brake Pads: If the car's brake pads are excessively worn or improperly installed, abnormal noise will also occur while driving. In this case, check the wear condition of the brake pads and reinstall them. If necessary, the brake pads can be directly replaced.

[Jackie]

Every time I drive over a speed bump and hear strange noises, I feel something is wrong—it's likely an issue with the chassis or suspension components. First, check the shock absorbers; if they're aged, leaking oil, or failing, they'll creak when compressed. Control arm bushings are also common culprits—when the rubber cracks or wears out, they produce squeaky sounds. Loose underbody panels or exhaust pipe mounting bolts result in obvious metallic clanging. If there are stones stuck in the tires or worn wheel hub bearings, you'll hear a clicking noise while driving. Aging or loose interior plastic parts can also rattle with vibrations. When I notice unusual noises, I always recommend inspecting the suspension and chassis fasteners because ignoring minor issues can lead to accelerated wear or even tire blowouts. It's best to visit a repair shop promptly for a lift diagnosis to avoid costly part replacements. Slow down when driving over bumps to protect components—don’t gamble with safety. Regular maintenance, including tightening bolts and lubricating key points, ensures your car lasts longer.

[VanElizabeth]

I think the abnormal noise when a car goes over speed bumps is mostly due to suspension system issues. Like my old car, after the shock absorbers leaked oil, it made a rattling sound, and the problem was only solved after replacing the new shock absorbers. The springs could also be loose or corroded, making a squeaking sound when compressed. Aging and cracking of the control arm bushings are common, causing a creaking noise over bumps. If the screws on the underbody protection plate are loose, there will be a clanging sound when hitting speed bumps. A loose or rusted/cracked exhaust pipe can produce a harsh metal scraping sound. Worn wheel hub bearings make a clicking noise when turning. Loose interior parts like the glove box or seat brackets can cause a thumping sound during vibrations. Don't ignore abnormal noises—I usually slow down for safety and try tightening screws with a wrench myself. But most issues require professional tools, so it's best to take it to a repair shop to check suspension mounting points and damping performance. Regular maintenance, like washing off mud and sand from the undercarriage and lubricating suspension points, can extend lifespan and save money. Safety comes first—small issues can escalate into dangerous problems.

[VonKyle]

Abnormal noises when a car goes over speed bumps are commonly caused by suspension component issues. Leaking shock absorbers produce a tapping sound. Worn-out control arm bushings create a squeaking noise. Loose underbody panels or exhaust systems result in noticeable metal clanging sounds. Worn wheel hub bearings generate a clicking noise during rotation. Loose interior trim causes a thumping sound during vibrations. During inspection, check the chassis and suspension for any signs of looseness or play. It's best to have a professional inspect key components. Prevention involves slowing down when crossing bumps and performing regular maintenance and lubrication to avoid safety hazards.