This is from my Service Manual

Vibration, roughness, 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 road surfaces. Drive the vehicle on different road surfaces to determine whether the surfaces are actually the cause of the condition.

Do not immediately suspect the tires or wheels when attempting to diagnose a vibration problem. Other sources of vibration include:

Loose or worn wheel bearings

Loose or worn suspension or steering components

Worn upper front suspension bearing and seal

Worn or damaged front wheel driveshaft joints

Front disc brake rotor or brake drum runout

Loose engine or transaxle supports

Engine-driven accessories



Start with checking that your tires have the right pressure in them.


1996 2.5LT V6 Contour ATX My Tour+help/info pics E0 rims, Gutted Pre-Cats,CTA Custom Exhaust & Intake, Diablo Chip.