What are the situations when car tires need to be replaced?
3 Answers
The situations when car tires need to be replaced are: 1. Exceeding the service life and mileage; 2. Severe tread wear; 3. Abnormal tire pressure; 4. Serious tire cuts. The functions of tires are: 1. Supporting the entire vehicle's weight; 2. Buffering vibrations and impacts from the road surface; 3. Transmitting driving force and braking force through the adhesion performance between tires and the road; 4. Ensuring a certain mileage through the tire's wear resistance and impact resistance. Precautions for replacing car tires are: 1. Check the expiration date, inventory should not exceed 3 years; 2. Inspect whether the tread pattern and color are normal; 3. Observe whether the joint between the tread and sidewall is smooth; 4. Avoid mixing tires of different structures and sizes.
As a long-term driver, I've learned that tire replacement shouldn't solely rely on maintenance schedules. Daily observation is crucial: use a one-yuan coin to test tread depth - if the national emblem's top is covered by treads, the condition is acceptable, but worn-out treads signal danger. Even with low mileage, tires over 5 years old should be considered for replacement as rubber hardening significantly increases high-speed blowout risks. I once experienced a rainy-day skid accident caused by ignoring sidewall cracks. Rotate front/rear tires every 8,000km to extend lifespan by 20%. Always check for bulges or cuts before long trips - never compromise on safety.
Tire lifespan is indeed an economic consideration—don't penny-pinch at the risk of greater loss. Regular family cars should evaluate tire replacement needs at 60,000 km, but actual wear depends on driving habits—frequent hard braking accelerates deterioration. Immediate replacement is mandatory when tread depth falls below 1.6mm (equivalent to two credit cards stacked). Bulging sidewalls or penetrating tread cracks render tires unsafe, as repairs compromise balance. Before rainy seasons, prioritize checking clogged drainage grooves—poor drainage increases wet-surface braking distance by over 3 meters. DIY inspection is simple: press fingernails into tread rubber blocks—if hardened and brittle, retire them immediately.
