Must I Replace a Cracked Tire?
2 Answers
Tire cracks can be assessed using the following methods to determine if replacement is necessary: 1. Outer edge cracks: If there are significant cracks on the outer edge of the tire, it indicates the tire has frequently been underinflated, meaning insufficient pressure. Considering the reduced grip performance in rainy conditions, the tire needs replacement. 2. Bulging and wavy cracks: If the tire's contact area shows bulging cracks on both sides and wavy cracks around the circumference, it suggests severe wear in components like the shock absorbers, bearings, and ball joints. The tire should be replaced, but first, inspect the suspension system for wear and replace any worn parts. Otherwise, replacing the tire alone won't solve the issue. 3. Uniform surface cracks: Once the tread is worn out, it means the tire's lifespan has ended, and replacement is mandatory. Additionally, the tread plays a crucial role in dispersing water on the road, maintaining the vehicle's grip. If the wear reaches the tire tread's standard depth (usually 1.6 mm for tires under 175 mm in width and 2 mm for wider tires), replacement is required.
Having driven for over twenty years, I believe tire cracks should be judged case by case. Small cracks on the tread might still be usable for a while, but if the cracks are on the sidewall or are deep and long, they must be replaced immediately. The sidewall is the weakest point of a tire, and under high-speed driving, the pressure is immense—cracks can expand easily, leading to a blowout, which is extremely dangerous. Last time I noticed fine cracks on the sidewall and didn’t address them promptly, resulting in sudden unstable tire pressure on the highway. Luckily, there weren’t many cars around, so nothing serious happened. Since then, I’ve made it a habit to check my tires monthly, feeling the tread and using my phone’s flashlight to inspect for cracks. Generally, tires age and need replacement after about five years, especially in northern winters where the cold makes rubber more prone to cracking. For safety’s sake, if the cracks are large or uncertain, don’t skimp—just head to the repair shop for a check. Spending a little now can save big trouble later. Driving is about peace of mind; neglecting to replace cracked tires might lead to regrets you can’t undo.
