What causes the rattling noise from the rear wheels of the new X-Trail when driving over bumps?
2 Answers
The reasons for the rattling noise from the rear wheels of the new X-Trail when driving over bumps are as follows: Stones stuck in the rear wheels: If stones are lodged in the tire treads, it can cause a "clicking" noise, and the frequency of this noise will change with the vehicle speed. Faster speed results in a higher frequency, while slower speed results in a lower frequency. Worn brake pads: If the brake pads inside the tires are worn to their limit, the metal wear indicators on the pads may rub against the brake discs, causing noise. It is recommended to check the thickness of the brake pads. If the thickness is less than 3mm, they need to be replaced. Worn wheel bearings: If the wheel bearings are worn and become loose, it can cause rattling noises. The wheel bearings should be inspected, and if they are loose, they need to be replaced.
Speaking of the rear wheel bumping and abnormal noise in the new Qashqai, I can relate because I've encountered similar issues frequently over the years of driving. The most common cause is problems with the suspension system, such as oil leakage in the shock absorbers or deformed springs, which tend to produce squeaking or metallic clanging sounds when going over bumps. Sometimes, it's due to worn-out rear wheel bearings, and that buzzing noise is particularly annoying. Although the new Qashqai is a new car, it's possible that the suspension links were loose or the bushings weren't properly installed during production. Another possibility is the brake components, like misaligned brake discs or calipers rubbing when going over bumps. I recommend first checking if the tire pressure is moderate, as excessively high pressure can amplify vibration noise. Then, try shaking the rear wheels to see if there's any looseness. If you can't figure it out yourself, take it to a professional shop immediately for a thorough diagnosis using a lift. Abnormal noises can mask serious problems, and sudden failure during high-speed cornering can be very dangerous, so don't take it lightly.
