What effect does overinflation have on tire tread wear?

Overinflation of a tire leads to accelerated centerline wear, which is characterized by the tread wearing more rapidly in the middle section. When a tire is overinflated, the increased internal pressure causes the tire to bulge outward. This shape results in more contact with the road occurring at the center of the tread rather than evenly across its width. As a result, the rubber in this area experiences greater friction and heat, leading to faster wear.

In addition, the shoulder areas of the tire do not make adequate contact with the driving surface, which may lead to the presence of rubber that remains less worn. This abnormal wear pattern is detrimental to tire performance, as it can reduce grip and handling capabilities. Proper tire inflation is crucial for achieving even wear and extending tire life, ensuring that all parts of the tread interact evenly with the road surface.