Vibration Diagnosis
Vibration and RoughnessVibration, roughness, tramp, shimmy and thump may be caused by excessive tire or wheel runout, worn or cupped tires, or wheel and tire imbalance.
These conditions may also be caused by rough or undulating road surfaces. Driving the vehicle on different types of road surfaces will indicate if the road surfaces are actually causing the condition.
Do not immediately suspect the tires when attempting to diagnose a vibration concern. Other sources of vibration include:
^ Loose or worn wheel bearings.
^ Loose or worn suspension or steering components.
^ Brake hub and rotor or drum runout.
^ Loose engine or transmission supports.
^ Engine driven accessories.
For diagnostic procedures and service for non-tire related vibrations, refer to Noise, Vibration and Harshness Diagnosis.