What Causes the Steering Wheel to Swing Left and Right on Rough Roads?

[Jill]

The reason for the steering wheel swinging left and right on rough roads is due to uneven road surfaces or issues with the shock absorbers. Solutions: 1. Uneven road surfaces can react on the tires, which then transmit through a series of steering mechanisms including the wheel hubs, steering axle, steering linkage, power assist mechanism, and steering column, causing slight rotation or vibration of the steering wheel; 2. Inspect rubber buffer components, engine mounts, and stabilizer bar bushings to check if the shock absorbers are leaking oil; 3. Perform a four-wheel dynamic balance and check for uneven tire wear on the front wheels. Sometimes, encountering potholes can be considered normal as the front wheels will automatically adjust to the shape of the pothole, slightly changing direction, which is reflected as a small automatic rotation of the steering wheel.