Condition of damage
Both shoulders wearing faster than the center tread
Causes
1. Underinflation and / or overload
2. Repeated sharp turns at a high speed in cornering
3. Improper matching of tires and rims
4. Tires are not rotated timely
Recommendations
1. Use tires under the recommended air pressure
2. Avoid rough driving in cornering
3. Use proper rims and mount tires properly
4. Rotate tires timely before shoulder wear becomes serious