1, too high tire pressure causes noise. When using a car at ordinary times, the tire pressure should be adjusted within the standard value (generally 2.3bar-2.5bar). The tire pressure is too high, the tire crown is seriously worn, the tire damping performance is reduced, and the tire noise is obviously increased.
2. Abnormal tire wear produces noise, and the local position of tire crown is in contact with the ground. If the tire crown is uneven locally, it will hum.
3. There is noise when the hub bearing is damaged, and it will make buzzing noise after the hub bearing is worn. The key reason is that the hub bearing is worn loose due to long-term use. By preventing the violent impact on the wheels when using the car at ordinary times and wading for a long time, the hub bearing can be basically protected.
Precautions:
Always check the condition of the tire to see if there are bulges, cracks, cuts, nails and abnormal wear, especially the tread edge of the tire, to see if there are abnormal wear caused by poor positioning or low-pressure driving. Once the tire is found damaged, it should be dealt with in time.
Too high or too low tire pressure is not desirable. The vehicle is equipped with a vehicle-mounted air pump, which can not only detect the tire pressure anytime and anywhere, but also deal with the air leakage, air leakage and abnormal tire pressure, so as to ensure the normal tire pressure, save gasoline, prolong the tire life and avoid potential safety hazards on the road.