What Causes the Squeaking Noise When a BMW 3 Series Drives on Bumpy Roads?

1 Answers
GenesisMarie
07/29/25 10:53pm
Most of the time, the squeaking noise when a BMW 3 Series drives on bumpy roads is due to the aging and hardening of the shock absorber top rubber. The area where the vehicle's shock absorber connects to the body has rubber, known as the shock absorber top rubber. This rubber serves to provide cushioning for the body and reduce vibrations. Over time, the rubber can age, and aged rubber becomes hard, leading to noise when driving over uneven surfaces. Additional information is as follows: 1. Antifreeze Usage Tips: It is best to use antifreeze year-round. Besides its anti-freezing and cooling functions, antifreeze also has cleaning, rust-removing, and anti-corrosion properties, reducing corrosion in the radiator and protecting the engine. Be sure to choose the correct color of antifreeze and avoid mixing different types. 2. Brake Fluid Usage Tips: The functionality of the braking system is closely related to the brake fluid. When inspecting or replacing hardware such as brake pads and brake discs, don't forget to check if the brake fluid needs to be topped up or replaced.
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