What Causes the Abnormal Noise When Shaking the Rear Wheels After Parking?
3 Answers
After parking, the abnormal noise when shaking the rear wheels is caused by: 1. Aging of shock absorber springs or rubber; 2. Aging or misalignment of the chassis suspension control arm or rear axle rubber. If the noise is confirmed to be coming from the brake disc area, you can release the handbrake and shake the vehicle again. If the noise disappears, it is a normal sound caused by friction between the brake discs. If the noise persists after releasing the handbrake and the location is not near the brake discs, it is necessary to inspect and confirm the condition of the chassis components. Generally, this issue occurs when the vehicle's handbrake is engaged. When shaking the vehicle, some brand models may produce noise due to friction between the brake discs.
I've been driving for years and have encountered the issue of strange noises when shaking the rear wheels after parking a few times, which seems quite common. Common causes include looseness in the suspension system, such as loose mounting screws on the shock absorbers or worn bushings—those things can rattle when shaken. If the wheel hub bearing is damaged and the bearing balls aren't rolling smoothly, shaking can produce a screeching noise. Loose brake caliper brackets can also knock around when shaken. Other possible causes include aging suspension arms or improperly tightened lug nuts. These may seem minor, but they can worsen while driving, such as wheel instability at high speeds, which is dangerous. So, I recommend first checking for obvious looseness in the components yourself, and it's best to get it inspected by a professional shop as soon as possible—don't delay.
I pay attention to car details and believe that this shaking and abnormal noise mainly comes from mechanical component damage in the rear wheel area. For example, insufficient internal lubrication due to worn wheel hub bearings can cause friction noise when rotating; loose spring seats in the suspension system's shock absorbers can also lead to squeaking; loose brake calipers or abnormal brake pads may produce collision sounds. Diagnosis relies on checking for loose points, such as manually rotating the wheel to listen for the noise location. There may also be loose chassis screws due to rust or aging, and these factors can accumulate and cause driving instability issues. Timely repairs can prevent bigger troubles.
