Diagnosis By Symptom

TYPICAL EXAMPLES OF ABNORMAL TIRE AHEAD WEAR AND MAJOR CAUSES:

CAUTION: Similar wear patterns can be caused by worn suspension parts, misalignment of wheels and tires, and other suspension related problems.





Spotty Wear
Wear localized on shoulder sections, and in an extreme cases, the tire becomes polygonal in shape.
1. Tire or wheel out of round or distorted.
2. Hub or knuckle out of round or distorted.
3. Play in hub bearings or ball joint.
4. Rotating parts out of balance.





Tread Wear One-Sided
1. Rotating parts out of balance.
2. Tire or wheel out of round.
3. Hub or knuckle out of round or distorted.





Localized Tread Wear
1. Once spotty wear develops in tread due to hard braking or abrupt starting, localized wear tends to be promoted.





Shoulder Wear (Generally Wear Develops In Outer Shoulder):
1. Camber or toe-in incorrect.
2. Shoulder wear caused by repeated hard-cornering.





Wear In Shoulders At Points Opposed To Each Other
1. Tire or wheel out of round or distorted.
2. Play in bearings or ball joint.





Premature Wear In Shoulders
1. Flexing of tire excessive due to under-inflation.





One Sided Feather Edging
1. Wear caused by repeated hard cornering.
2. Camber or toe-in incorrect.