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What causes the abnormal noise when driving at low speed on flat roads?

2 Answers

VonValerie

07/29/25 6:02am

If abnormal noise occurs when driving on relatively flat roads, it is likely due to the aging of the buffer rubber on the shock absorber. In this case, simply replacing the buffer rubber will resolve the issue. 1. Consequences of hardened aging rubber: The buffer rubber on the shock absorber may harden over time with prolonged use, leading to abnormal noises. The shock absorber is connected to the car body via buffer rubber, which enhances ride comfort. Rubber components tend to age with prolonged use. When rubber ages, it hardens, causing abnormal noises during driving. 2. Solution for hardened aging rubber: Replacing the buffer rubber is a straightforward solution, and the cost of buffer rubber is relatively inexpensive. However, after replacing the buffer rubber, it is advisable to perform a four-wheel alignment to recalibrate the wheel data. If the four-wheel alignment is not done after reinstalling the shock absorber, the car may easily experience alignment issues and uneven tire wear. 3. Four-wheel alignment: When performing a four-wheel alignment, it is essential to visit a shop with professional equipment and skilled technicians. Having professional equipment without skilled technicians will not yield proper adjustments. Additionally, it is recommended to schedule regular four-wheel alignments during routine vehicle maintenance.

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LunaRose

08/12/25 9:32am

I've also experienced that annoying clunking noise when driving at low speeds on flat roads. It's usually due to loose or worn suspension components, like worn shock absorber ball joints or small stones stuck in the brake pads. At low speeds, with less body vibration, the noise becomes more noticeable, sounding like a collision. It could be loose front suspension links or issues with the rear axle bushings. I've done a simple check myself before: after parking, I pushed the wheels to see if there was any play. Don't ignore these minor issues—get them checked at a reliable repair shop promptly, or they could lead to more expensive suspension damage over time. During regular maintenance, ask the mechanic to check the tightness of suspension bolts when changing the oil—it's good preventive care. Safety first!

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