How often should sedan tires be replaced?

[LaVivian]

Here is the introduction to the service life of sedan tires: 1. The service life of car tires is four years or 80,000 kilometers, whichever comes first. If the tires have no issues but have been in service for four years, they should be replaced even if the mileage hasn't reached 80,000 kilometers. Similarly, if the mileage reaches 80,000 kilometers before four years, the tires should also be replaced. 2. If there are fine cracks on the side of the tire, it should be replaced immediately. 3. The lifespan of a tire should not exceed five years, calculated from the date of manufacture. Even if the tire appears to be in good condition after five years, it should be replaced. Aging tires lose their original elasticity, and continued driving can cause the tire to deform, leading to the risk of a blowout.

[HaydenRose]

After driving for over a decade, I've learned that deciding whether to change tires isn't just about how old they are. First, check the tread wear. The national standard requires replacement if the remaining depth is below 1.6mm. I often use a coin for a quick test: insert a one-yuan coin into the tread—if the chrysanthemum pattern is fully visible, it's time to change. Second, consider the age. Most tire manufacturers recommend replacement every 4 to 6 years. Even if the tread looks fine, aged rubber becomes brittle in summer heat or winter freeze, increasing the risk of a blowout. Driving habits also play a big role. For example, I frequently drive on highways and brake hard, which wears tires faster. City driving is gentler, so wear is slower. I check tire pressure and tread every six months—don't skimp on these small expenses, safety comes first. Old tires are especially dangerous on slippery rainy roads; replacing them early reduces accident risks. On average, my tires need replacing every five years. I always opt for reputable brands when buying new ones—they last longer.

[JeremiahAnn]

When I first bought my car, I was quite clueless. After driving for over four years, I felt something was off with the tires—they slipped a bit on the highway. Later, I learned that tire replacement mainly depends on wear indicators. If the raised bars in the tread pattern are worn flat, it’s time to change them. Time is also a factor that can’t be ignored; tires stored in a garage for too long can age, increasing the risk of rubber cracking. The inspection method is simple: use a tread depth gauge or a mobile app to measure the depth—if it’s below the recommended value, take action. In daily driving, I make sure to maintain proper tire pressure, as both overinflation and underinflation can accelerate wear. Before tackling rough roads or long trips, I always inspect the tread carefully. A money-saving tip is to buy tires during promotions, but don’t compromise on quality for the sake of a bargain. From a safety perspective, accidents often start with tire issues. Regular replacements can be life-saving, and it’s generally recommended to change them every four to six years.

[JordanAnn]

I don't drive much and changed my tires after seven years, with the key being to closely monitor tread wear. If you frequently brake hard or drive on gravel roads, wear accelerates, and they might not last more than four years. During inspection, check the tread depth—replace them if it's below the safety line, don't wait for a blowout. Aging is also a factor; rubber loses elasticity after five years, reducing grip on wet surfaces. I simply check tire pressure monthly—the recommended value is marked on the door frame—maintaining it extends lifespan. To save money, budget tires are a decent choice, but never compromise on safety.

[OAubrey]

Tires aren't replaced just when worn out; it's a combination of wear and time. Replace them when the tread wears down to the bottom marker line. I measure the depth every six months—quick and easy. If they're over six years old, replacement is recommended even if the tread remains, as aged rubber is prone to cracking under temperature changes. Driving habits affect lifespan—for instance, I often overload during transport, so my tires wear faster. Checking is simple: use a dedicated tool or learn from online videos. Unstable pressure also accelerates issues, so check the tire pressure gauge weekly. Consider the season when replacing tires; opt for new ones in summer to prevent softening from heat. Safety first—old tires are prone to skidding in rain, so replace them early for peace of mind.