Tread – Shoulder Wear Condition of damageBoth shoulders wearing faster than the center treadCauses1. Underinflation and / or overload2. Repeated sharp turns at a high speed in cornering3. Improper matching of tires and rims4. Tires are not rotated timelyRecommendations1. Use tires under the recommended air pressure2. Avoid rough driving in cornering3. Use proper rims and mount tires properly4. Rotate tires timely before shoulder wear becomes serious Examples