A bulge on a tire’s sidewall indicates internal damage compromising its structural integrity. This deformation is often the result of impacts that sever the tire’s internal cords, allowing air pressure to push the weakened outer layer outwards. Consider it akin to a hernia in the tire’s construction.
The presence of such a deformation is a serious safety concern. Continued use of a tire exhibiting this condition poses a significant risk of sudden tire failure, particularly at higher speeds or under increased loads. Historically, improvements in tire manufacturing processes have aimed to minimize the occurrence of this type of damage, though it remains a potential hazard.