saporrotire

1) Mechanical Damage On Shoulder

Appearance: The separation is Probable cause(s)d by cutting with sharp objects on the shoulder area.

Probable cause(s):Cut by some sharp thing during running or keeping to the roadside.

2) Shoulder Separation

Appearance: Separation between rubber to rubber and rubber to belts, separation surface is smooth without avulsion and cord damage

Probable cause(s): In manufacture process, the compaction between each belt and tread rubber or the bond strength of rubber is not well, and degree of crosslinking is out of standard or under cure.