What Causes Severe Buzzing Noise After Reaching 100 km/h?

[OKyle]

Severe buzzing noise after reaching 100 km/h can be caused by: 1. Tire noise - After prolonged use, tire treads wear down, altering the contact pattern with the road surface and causing abnormal noises during driving; 2. Bearing noise - When vehicle bearings are subjected to lateral forces or become rusted due to water ingress, they may produce buzzing sounds above 100 km/h, especially noticeable during turns, requiring bearing replacement; 3. Severe buzzing noise accompanied by significant body vibration indicates wheel imbalance issues causing resonance, necessitating four-wheel dynamic balancing; 4. Wind noise - At high speeds, airflow around the vehicle body creates normal buzzing wind noise that increases with speed.