For 1990-2009 cars

### Tire Wear

Irregular and premature tire wear has many causes, the most common being:

• | Incorrect cold tire inflation pressure

• | Incorrect wheel alignment

• | Lack of tire rotation

• | Worn suspension parts

These conditions can often be diagnosed by visually inspecting the tire tread for the following telltale symptoms:

### Incorrect Cold Tire Inflation Pressure

Tread wear at center of tire- over-inflation.

• | Frequent, aggressive acceleration

• | Cold tire inflation pressure too high

Tread wear on edges of tire -- under-inflation.

• | Hard cornering

• | Cold tire inflation pressure too low

• | Lack of rotation

### Incorrect Wheel Alignment

• | Tread is worn on one side of the tire more than the other.

• | Tread blocks have scuffed, feathered or cupped appearance.

### Lack Of Tire Rotation

Front tires worn more than rear tires.

### Wheel/Tire Imbalance

#### Worn Suspension Parts

• | Wheel bearing looseness

• | Front suspension loose/worn

• | Steering parts loose/worn

• | Front control arm ball stud or bushing loose or worn

• | Strut dampers worn or damaged