1. Violated wheel alignment (see «Front wheel alignment - check»).
2. Malfunction of suspension springs (see «Checking the technical condition of the front suspension» And «Checking the technical condition of the rear suspension»).
3. One or more wheels out of balance (see «Checking the technical condition of wheels, tires and hubs»).
4. The vehicle is overloaded or unevenly loaded (unload the car).