Should a Cracked Tire Be Replaced?
2 Answers
Tire cracks are recommended to be replaced directly, as continued use may pose a risk of tire blowout. The causes of tire cracking are as follows: Traumatic Cracking: This type of cracking generally occurs without regularity in location, shape, or size, caused by collisions, compressions, or scraping against foreign objects while driving. Some cracks only appear on the rubber surface, while others may damage the tire carcass cords, with severe cases leading to instant tire deflation. Generally, if the cracks are minor and only on the rubber surface, they do not affect tire safety and can continue to be used. However, if the cracks penetrate deep into the carcass cords or even cause cord damage, they pose a safety hazard and must be replaced as soon as possible. Aging Cracking: This type of cracking usually occurs in the later stages of tire use, commonly seen on the tire shoulder or lower sidewall, and sometimes at the bottom of the tread grooves. This is a natural change in the tire rubber due to long-term flexing and heat generation. Driving with long-term low tire pressure can accelerate this process, but it usually does not affect the tire's service life or safety performance, so early replacement is generally unnecessary.
Having driven for decades, I've seen many friends with tire issues. I've encountered tire cracks several times, and it really depends on the situation. If the crack is on the sidewall, especially if it's more than a few millimeters deep or has caused bulging/deformation, you must replace the tire immediately. Otherwise, it could easily blow out at high speeds - extremely dangerous. Once I noticed a small crack and thought nothing of it, but within days it expanded and the tire went flat in the city, nearly causing an accident. For shallow cracks in the tread center, you might get by for a while, but check frequently for changes. Best to have a repair shop inspect it professionally - safety first. Regular tire checks are crucial; I spend a few minutes monthly inspecting mine. Early detection saves money and hassle while reducing risks. Remember to maintain proper tire pressure (not too high or low) to prevent crack expansion and delay replacement costs.
