At what extent of tire cracks should they be replaced?
4 Answers
Car tires should be replaced when cracks reach the following extent: 1. Crack length exceeds 6 mm. Whether cracks on tires require replacement depends on the depth of the cracks. Cracks less than 6 mm in length can be repaired at a repair shop, while those exceeding 6 mm require tire replacement because the internal materials damaged cannot be repaired. If the repaired tire is a front tire, it is recommended to swap it with an unrepaired rear tire to minimize the risk of a blowout. 2. Presence of numerous small cracks. If the tire shows signs of aging, with countless small cracks at the base of the tread grooves or the tire sidewalls that are about to damage the tire body, the tire must be replaced immediately regardless of how long it has been used or how much it has worn.
I'm quite qualified to speak about tire cracks, having driven for over 20 years. Small surface cracks are usually not a big issue, but if the cracks are deep enough to expose the steel wires or fabric layers, or located in thin areas like the sidewall with lengths exceeding several centimeters, you should replace them immediately. I once ignored a small scratch, only to have a sudden flat tire on the highway—scary stuff. Tires tend to crack as they age; even shallow cracks on tires older than five years may indicate aging. When inspecting, insert a coin into the crack—if it covers half the pattern's depth, the risk is high. Avoid parking in direct sunlight to prevent many issues. Safe driving is no joke; spending a bit on new tires is far better than dealing with an accident.
As a daily commuter, tire cracks always worry me a bit. If the crack depth exceeds 1mm or extends horizontally to weak areas like the shoulder or sidewall, it must be replaced without hesitation. I believe regular inspections are key, such as taking a quick look every month and feeling with your hands to check for sharp edges. Tire aging typically accelerates after six years, so even without cracks, you should stay vigilant. Deep cracks can cause blowouts during high-speed driving, and repair costs may exceed the price of new tires. Safe travel is the top priority. Don't skimp on small expenses—replacing tires only costs a few hundred bucks, but it ensures peace of mind and safety.
When driving my kids around, tire cracks must be taken seriously. Small hairline cracks are not a big deal, but deep cracks exposing inner layers, especially on the sidewalls at critical points, mean it's time to replace them. Risks increase after five years of tire use due to aging and drying cracks. The inspection method is simple: check if the cracks have widened or deepened, and replace them promptly to ensure family safety. A quick glance before each trip ensures peace of mind while driving.
