Do I Need to Replace Cracked Tires?
1 Answers
Whether to replace cracked car tires depends on the situation. If the cracks are caused by external impact or scratches, immediate replacement is necessary. There are two scenarios for tire cracks: 1. Natural aging of tire rubber: Natural aging of tire rubber usually occurs after prolonged use, where many fine cracks appear on the tire surface, known as "crazing." Since tire rubber requires a certain level of hardness, a manufacturing process called vulcanization is used. Vulcanized rubber increases hardness but will age over time. Therefore, tires generally have a lifespan of about 3 years. If crazing appears, continuing to use the tire without replacement may lead to the risk of a blowout, compromising vehicle safety. Thus, it is recommended to replace the tire as soon as possible. 2. External impact or scratches on the tire: Cracks caused by external impact usually appear on the tire sidewall. The tread, which contacts the road, is less likely to suffer such impacts. However, the sidewall is more vulnerable, such as when rubbing against curbs while parking or scraping against pothole walls, leading to cracks. Such cracks necessitate tire replacement because the sidewall is the weakest part of the tire. Cracks indicate structural damage, and while driving, friction between the tire and the road generates heat, causing the internal gas to expand, significantly increasing the risk of a blowout. This affects vehicle safety, so replacing the tire is advised.
