What to Do When There's a Buzzing Noise When the Speed Exceeds 80?
2 Answers
The solutions for a buzzing noise when the speed exceeds 80 are: 1. Perform a dynamic balance check on the car to see if it is caused by uneven tire wear or if the wheel hub is normal, and also check the car's engine oil; 2. Inspect the car tire's rotating bearing—if the bearing is damaged, a buzzing noise will occur when the car is running at high speed, and the tire bearing needs to be replaced; 3. Check the shock absorber spring to see if the noise is coming from it, or inspect the car's exhaust pipe soft connection area for any foreign objects. If there are foreign objects, they should be cleaned promptly.
I just encountered this issue last week - a humming noise starts when the speed reaches 80 km/h. Inspection revealed it was a tire problem: uneven tread wear created sawtooth patterns that vibrate and generate noise at high speeds. First, check and maintain proper tire pressure. If the tires are over three years old, replace them immediately. It could also be aging wheel bearings - their friction noise amplifies at highway speeds, requiring professional diagnosis. Don't overlook wheel balancing either - missing counterweights or slightly deformed rims can cause noises. If all else fails, check whether the brake rotor cooling fins are deformed and touching rotating components. Such noises shouldn't be ignored as they damage the vehicle and pose safety risks.
