What Causes the High-Speed Resonance Noise in MG6?
2 Answers
Possible reasons include uneven tire wear or damaged wheel bearings. Causes of resonance: The engine's vibration frequency matches the vehicle's natural frequency. The car body is designed to avoid overlapping the natural frequency with the engine's frequency. However, due to wear and tear from usage, the vehicle's natural frequency may change, leading to resonance at new speeds. This speed can be understood as the "resonance point." If the resonance worsens beyond this point, it is necessary to visit a repair shop for inspection. How to address uneven tire wear or damaged wheel bearings: Perform a wheel alignment or replace the tires.
When driving my MG6 on the highway, I've encountered several instances of buzzing resonance from the body accompanied by creaking noises, which were quite annoying. I believe the most common cause is unbalanced wheels, especially if the tires have uneven wear or bulges, causing vibrations at high speeds that lead to body shaking and noise. Another possibility is a damaged wheel bearing; when it wears out, friction increases, producing rhythmic rattling sounds at higher speeds. It could also be an issue with the suspension system, such as leaking shock absorbers or worn top mounts, causing noises over bumps. Last time, it was a wheel issue for me, and replacing the balancing weights made it much quieter. For safety, don't ignore it—if it leads to loss of control, it could be dangerous. Just head to the 4S shop to check the wheels, bearings, and suspension. Spending a few hundred bucks will give you peace of mind.
