Condition

 Possible Cause

 Common Wheel Alignment Terms

Front End Shimmy

Excessive wheel/rim ruinous.
Power steering reaction bracket loose.
Steering gear box (rack) mount loose.
Steering gear adjustment loose.
Tires out of balance.
Tires or Rims out of round.
Wheel bearings worn or loose.
Worn steering/suspension components.

     Camber

     Caster

 Toe   

 Steering Axis Inclination (SAI)

 Included Angle

 Scrub Radius

 Riding Height

 Front or Rear Setback

 Thrust Angle

 Steering Center

 Lateral Offset

 Track Width Difference

 Axle Offset

 Wheelbase Difference

       Toe Out on Turns

Hard Steering

Ball joint tight or seized.
Bent steering knuckle or supports.
Damaged suspension components.
Front tire pressure low.
Idler arm bushing too tight.
Power steering fluid low or belt loose.
Power steering pump defective.
Steering gear out of adjustment.

Premature Tire Wear

Incorrect wheel alignment.
Incorrect tire inflation.
Suspension/steering system worn.
Uneven or sagging springs.
Improper torsion bar adjustment.
Worn or defective shocks/struts.
Tires out of balance.

Pulls To One Side

Incorrect wheel alignment.
Incorrect tire inflation.
Brakes dragging.
Mismatched tires or Radial Pull.
Frame bent.
Control arm bushing worn.
Power steering valve not centered.
Broken or sagging springs.
Uneven sway bar links.

Vehicle Wandering

Incorrect wheel alignment.
Incorrect tire inflation.
Wrong tires for vehicle.
Worn shock/strut.
Improper vehicle height.
Rack & Pinion or steering not positioned correctly.
Stabilizer bar missing or defective.
Worn steering components.
Worn strut rod or control arm bushings.