1. Wheel bearings: Worn or damaged wheel bearings can cause a humming noise that increases in pitch as the vehicle's speed increases. The noise may also be accompanied by vibration, especially when turning.
2. Driveline: A problem with the driveline, such as a worn or damaged U-joint, can also cause a humming noise and vibration. The noise may be more noticeable when accelerating or decelerating.
3. Tires: Unevenly worn or damaged tires can cause a humming noise and vibration. The noise may be more noticeable at certain speeds or when driving on rough roads.
4. Transmission: A problem with the transmission, such as low fluid levels or worn gears, can also cause a humming noise and vibration. The noise may be more noticeable when shifting gears or accelerating.
To identify the source of the noise and vibration, it's recommended to have the vehicle inspected by a qualified mechanic. They can properly diagnose the problem and recommend the necessary repairs.
