What is the reason for the left and right swaying feeling when the rear wheels go over a pothole?
2 Answers
Possible causes include significant tire deformation or uneven wear. Below is relevant information about car tires: 1. Function of tires: To support the entire weight of the vehicle, bear the load of the car, and transmit forces and moments in other directions; to transfer traction and braking torque, ensuring good adhesion between the wheels and the road surface to improve the car's power, braking, and passability; to work with the car suspension to mitigate impacts during driving. 2. Tire lifespan: The lifespan of a tire is related to many factors, such as climate, road conditions, driving style, installation, maintenance, etc. According to international regulations, if the tire is used normally, it must be replaced when the tread depth wears down to 1.6 millimeters.
Experiencing swaying when the rear wheels go over bumps is quite common in my years of driving experience. Generally, it's due to issues with the rear suspension system, such as aging shock absorbers leaking oil, or weakened springs failing to absorb road bumps, causing the wheels to wobble side to side when hitting potholes. Insufficient tire pressure is also a key factor; too low pressure reduces tire elasticity, making the car unstable over bumps and increasing the swaying sensation. Additionally, wear in chassis components like control arm or link bushings, leading to loose connections, can also cause swaying. If not repaired promptly, it may affect handling stability, causing the rear end to drift during turns and increasing the risk of skidding. I recommend driving carefully and having a repair shop thoroughly inspect the suspension and tires to avoid future problems.
