How to check tire wear
Tires are parts of vehicles that are in direct contact with the ground, and their wear directly affects driving safety. Recently, the discussion on tire maintenance and safety has been very popular across the Internet. In particular, how to judge the degree of tire wear has become the focus of car owners. This article will combine structured data to explain in detail the inspection methods and precautions for tire wear.
1. Common symptoms of tire wear
Tire wear usually manifests itself in the following forms, each of which may correspond to a different vehicle problem:
| Wear type | Possible reasons | Hazard level |
|---|---|---|
| central wear | Tire pressure is too high | medium |
| Wear on both sides | Insufficient tire pressure | high |
| jagged wear | Suspension system problems | high |
| Unilateral wear | Incorrect four wheel alignment | extremely high |
2. How to check the degree of tire wear
1.Observe tire tread depth
Tire tread depth is an important indicator of wear and tear. Most tires are equipped with a wear indicator mark (TWI). When the tread wears to the level of the indicator mark, the tire must be replaced.
| Pattern depth(mm) | Wear status | Recommended Action |
|---|---|---|
| >3.0 | normal | continue to use |
| 1.6-3.0 | moderate wear | Observe closely |
| <1.6 | severe wear and tear | Replace now |
2.Use the coin test
Insert a one-yuan coin into the tire tread. If you can see the complete "1", it means that the tread depth is less than 1.6mm and the tire needs to be replaced.
3.Check tire production date
Even if the tread depth is sufficient, tires that are more than 5 years old should be considered for replacement. The last four digits of the DOT number on the tire sidewall indicate the week and year of production. For example, "2523" indicates production in the 25th week of 2023.
3. Tire maintenance suggestions
1.Check tire pressure regularly
Check tire pressure at least once a month, including the spare tire. Correct tire pressure can be found in the vehicle owner's manual or the label on the door frame.
2.Regular tire rotation
It is recommended to rotate the tires every 8,000-10,000 kilometers to balance the wear of each tire.
| Drive mode | Recommended transposition method | Transposition period (km) |
|---|---|---|
| front wheel drive | forward and backward cross-position | 8000 |
| rear wheel drive | front-to-back parallel transposition | 10000 |
| four wheel drive | four-wheel cross-position | 8000 |
3.Avoid bad driving habits
Behaviors such as sudden acceleration, sudden braking, and high-speed cornering will accelerate tire wear and should be avoided as much as possible.
4. Judgment of tire replacement timing
Even if the tread depth is acceptable, you should consider replacing your tires when:
- Tires have bulges or cracks
- Tires repaired more than 3 times
- Severe tire wear
- Tires are obviously aging (hardening, cracking)
5. Summary
Regularly checking tire wear is an important part of ensuring driving safety. By observing tread depth, checking wear patterns, regular maintenance and other measures, tire problems can be discovered in time and safety hazards can be avoided. It is recommended that car owners conduct tire inspections at least once a month and deal with problems promptly when problems are discovered.
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