The root cause of this undesirable phenomenon is that the extension of the strip edge area is out of the elasticity limit of the material.
引起鼓包最根本的原因是带钢边缘延伸超出了该材料的弹性极限范围。
However, if the tyre is travelling at low tyre pressure condition, the rubber will be deformed, stretching more than the strength of the fibres and elasticity limit of the steel wire.