What kind of tire cracks are considered normal?

[MacMadeline]

Cracks that are fine and appear on the tire tread are normal. Since the typical lifespan of a tire is five years, small cracks may appear after about three years of use. This is a normal sign of aging, cracking, or wear and does not necessarily require replacement, but regular inspections are still recommended. If cracks appear on the tire sidewall, it is important to have them checked at a shop promptly and replaced if necessary. The sidewall is the most vulnerable part of the tire, and continued driving with such cracks may lead to a blowout. Additionally, if the cracks are too long or deep, reaching the standard tread depth of 1.6mm, replacement is also required. Tires with bulges should be replaced immediately. Bulging is a common issue with tires, usually caused by impacts that break the internal metal cords, leading to bulges. Continuing to drive at high speeds or over long distances with bulging tires significantly increases the risk of a blowout and potential accidents, so drivers should be cautious.