With the arrival of the hot summer, car tires have become restless when used in high-temperature environments, and puncture accidents have occurred from time to time. According to incomplete statistics, 46% of highway traffic accidents are caused by tire failures, of which a puncture accounted for 70% of the total number of tire accidents. Therefore, prevention of puncture has become the key to driving safety in summer.
Except for a few car owners who have experienced a tire blowout on the road, they will pay special attention to the tire status of the vehicle, and more car owners have a vague understanding of when to replace the tires. Most car owners are forced to replace their tires, damaged or punctured. After a puncture, a puncture, etc., the tire must be replaced. However, this forced replacement of tires is actually a remedial task, and invalid tires have already brought danger.
XNUMX. When should tires be replaced?
The wear and aging of tires are closely related to the use of the vehicle and the driving environment. It cannot be assumed that the tire must be replaced as long as it takes, and the owner can determine whether to replace it according to his own judgment.
  1. When the tire is worn to the wear limit mark, it must be stopped. Data shows that the tread depth is less than 1.6 mm as the wear limit.
  If you often drive on wet and slippery roads with low friction, it is best to ensure that the tread pattern thickness is twice the above value.You can buy a gauge to measure the thickness of the tread pattern, or you can use a one-yuan coin to insert into the tread groove along the top of the national emblem, because the distance between the edge of the coin and the top of the national emblem is between 1 and 2 mm, so if At this time, you can also see the entire national emblem sign, indicating that the tread pattern thickness is insufficient.
  2. The tires need to be replaced if they are seriously aging.
  The tires are rubber products, so they will naturally age apart from wear. Therefore, the shelf life of general tires is three years, but one thing is certain is that if the tires are purchased and not used, the natural aging speed is not the same as the speed installed on the car. .
  3. Tires with deformed treads or bead damage, tires with sidewalls damaged by running out of air, and tires corroded by chemicals must not be used anymore.
  The sidewall of the tire is the most fragile part. If the wound is wound, it is extremely dangerous even after repair.If there are visible cracks and cuts on the sidewall of the tire, there may be air leak cracks in the future, and even more serious, it will cause a flat tire.
  4. If the tire has a bulge, it cannot be used.
  What kind of situation is an abnormal bulge?It is usually due to insufficient strength on the outer surface of the tire, which results in a bulge that is higher than the normal tire surface.If the bulging tires are not replaced in time, the areas with insufficient strength on the tread are likely to cause sudden bursts, and tire bursts are extremely easy to occur when driving at high speeds.
  5. If other damage affects the safety of the tire, it is not allowed to continue to use it.
  Different road conditions, the vibration of the vehicle when driving is different. It is normal for the vehicle to have some jitter, but if the jitter is caused by the axial deviation of the tire or the unbalanced force, you must go to the repair shop to do it. Check and repair.If the abnormal jitter is not caused by the tire, attention should also be paid to investigate the abnormality as soon as possible, because long-term excessive vibration and jitter will damage the performance of the tire.
  XNUMX. What factors will accelerate tire wear?
  1. If you experience some bad road conditions, the tires will wear out faster than when driving on a smooth road.
  2. If you drive irritably, abrupt acceleration and braking will also accelerate tire wear.
  3. Daily maintenance will also have a significant impact on the service life of tires, such as too frequent four-wheel alignment of vehicles, regular air pressure inspections, and so on.
  XNUMX. How to judge that the tire is close to failure state?
  Generally speaking, the failure state of a tire has the following manifestations. Although it cannot be absolutely said that the tire has completely failed, the tire must be replaced as soon as possible to avoid accidents.
  1. The pattern on the surface of the tire has worn out.
  2. The side of the tire has hard injuries due to impacts and other reasons.
  3. The blisters on the tire surface have begun to leak.
  4. The reason is not found, but tires often lose air.
  5. Although there is no serious injury, the tire has been repaired several times and there are too many injuries.
  If a tire that has nearly failed is not replaced in time, resulting in a vehicle passing accident during driving, causing the vehicle to lose control or the vehicle to break down, the consequences will be catastrophic.
  Car owners can complete the simple vehicle inspection tasks such as judging whether the tires are deformed.
  Fourth, we must regularly do “physical examination” for tires
The radial water diversion tank of the tire has the function of reducing road noise, increasing friction and water separation. If stones enter the water diversion tank, it will affect the performance of the function. Yang Ke introduced that when washing the car, the water distribution tank must be cleaned. In daily driving, you can also judge from the sound of your car passing the speed bump. If there is an abnormal noise, then there is a stone in the water tank, which must be removed in time.
During daily driving, the surface of the tire must be checked regularly to see if there are cracks in the rubber. If you feel a bump in the tire, it means that air may enter the inner layer of the tire. The tire should be replaced regardless of whether it is new or old. If there are cracks on the tire tread, it means that the tire’s rubber has begun to age and should be replaced.
5. What are the hazards of using expired tires?
1. What is a stock tire?
New tires generally refer to tires that have been manufactured within one year.If the tires sold to customers have been out of the factory for more than one year, they are generally treated as “stock tires”.The seller should tell the customer the actual production date of the tire and give a certain discount.
2. What is the difference between stock tires and new tires?
The warranty period of tires is 3 years. This time is calculated from the date of manufacture, not from the date of purchase.
If you buy a tire that was produced two years ago, then the warranty period is only one year left.
Tires are rubber products, and the rubber may be aging after standing for more than 3 years, which may affect the safety of use.
6. How to read the information on the tires?
1. The trademarks on the tires are all marked with English letters.The trademark letters of the genuine tires are very clear and easy to identify.Pay attention to tire trademarks and do not buy counterfeit tires.
2. There will be 4 Arabic numerals on the sidewall close to the steel rim, which are used to indicate the factory date of the tire. The first two digits indicate the week number, and the last two digits indicate the year. For example, 0814 means that the factory date of this tire is the 8th week of 2014.
3. When the tire leaves the factory, the manufacturer will post a bar code, so you can enjoy the three guarantees, and the corresponding manufacturer can also be identified through the bar code. If there are no barcodes on the tires, such tires are likely to be products of unknown channels.
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4. There will be a protruding part in the tire groove. If the groove is worn to the protruding part, it means that the tire needs to be replaced when it is time to be replaced. Pay attention to check it during each maintenance.
Seven, change the tires at least one pair
When choosing tires, choose branded tires to ensure quality. Regularly rotate tires, because the weight of the car is not evenly distributed to all four tires, regular rotation is indispensable for maintaining uniform tire wear and maximizing tire life. For four-wheel drive vehicles, it is recommended to exchange all four tires, that is, the tires of the front and rear axles are swapped diagonally. When parking, the car owner should keep a distance from the shoulder of the sidewalk. The tire wall* is easy to be damaged. The tires are used for 50,000 to 60,000 kilometers, and they should be replaced at the end of their service life. When the tire reaches a certain life span, the rubber wear is very serious, the rubber becomes hard and easy to crack, and then it is easy to cause a puncture. In fact, the use of tires is closely related to life safety and may bring life danger. When changing tires, you must change at least one pair, because the diameter of the worn tire and the new tire will be different, which may easily cause traffic accidents.
Summary: The safety line of the tire marks the lifeline of the vehicle. If the effective use range of the tire is not treated correctly, careless driving will often cause the vehicle to have a hidden danger of potentially dangerous accidents.

Link to this article:How to appease tire "restlessness" in summer?

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