What are the reasons for severe cabin bumpiness?

[MacAyla]

The reasons for severe cabin bumpiness are as follows: 1. Vibration of the plastic shell on the cabin lift roof: If the noise is caused by the vibration of the plastic shell on the cabin lift roof, this is a normal phenomenon. Simply adding some plastic foam inside can resolve the issue. 2. Aging of the buffer rubber pads on the gantry frame: When a truck has been used for a long time, the buffer rubber pads on the gantry frame may age, leading to noise when the truck drives on bumpy roads. In this case, the buffer rubber pads on the gantry frame need to be replaced. 3. Damage to the front shock absorber: If the front shock absorber or the plane bearing is damaged, it can also cause noise while driving. This situation requires professional inspection and repair at a repair shop or 4S store. 4. Severe wear of the front brake pads: If the front brake pads are severely worn, noise may occur during braking, which can then be transmitted to the cabin. In this case, the brake pads need to be replaced. 5. Severe tire wear: Severe tire wear can also cause noise while driving. In such cases, the tires should be replaced promptly.