Tread – Heel and toe wear Condition of damageOne side of the blocks and / or lugs on the tread wearing faster than the other side circumferentially like sawteethCauses1. Tires are not rotated timely2. Underinflation and / or overload3. Sudden braking or rapid accelerationRecommendations1. Rotate tires timely before heel & toe wear becomes serious2. Use tire under proper air pressure and load3. Avoid rough driving Examples