Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
Tires Show Excess Wear on Edge of Tread	Underinflated tires.	ADJUST air pressure in tires.
	Vehicle overloaded.	RETURN vehicle - NOTIFY customer of overload condition.
	High-speed cornering.	RETURN vehicle - NOTIFY customer of cause of condition.
	Incorrect wheel alignment.	SET toe to specification. REFER to SUSPENSION SYSTEM - GENERAL INFORMATION .
Tires Show Excess Wear in Center of Tread	Tires overinflated.	ADJUST air pressure.
Other Excessive Tire Wear Problems	Incorrect tire pressure.	ADJUST pressure.
	Loose or leaking shock absorbers.	TIGHTEN or INSTALL new as necessary.
	Front end out of alignment.	ALIGN front end. REFER to SUSPENSION SYSTEM - GENERAL INFORMATION .
	Front wheel bearings out of adjustment.	REFER to SUSPENSION SYSTEM - GENERAL INFORMATION for inspection procedure.
	Loose, worn or damaged suspension components.	REFER to SUSPENSION SYSTEM - GENERAL INFORMATION .
	Wheel and tire assembly out of balance.	BALANCE wheel and tire assembly.
	Excessive lateral or radial runout of wheel or tire.	Repair as necessary.
	Incorrect tire rotation intervals.	ADVISE customer of condition.
Wobble or Shimmy	Damaged wheel bearings.	REFER to SUSPENSION SYSTEM - GENERAL INFORMATION .
	Loose or damaged suspension components.	INSTALL new as necessary.
	Bent wheel.	INSTALL new as necessary.
	Damaged tire.	INSTALL new as necessary.
	Loose wheel nuts.	TIGHTEN to specification.
High-Speed Shake	Wheel hub face/pilot/bolt circle runout. Tires/wheels. Wheel bearings. Suspension/steering linkage. Engine. Transmission. Brake rotor.	Repair as necessary.
Vehicle Vibration	Driveline - engine. Tires.	Repair as necessary.