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The life of the tireGenerally about 5 years，When this time, it usually appears、Cracking situation，So time is a very important reference value。

The production date on the tire is not like the usual products indicating the production of a certain year, a month, and a day，Instead of using a four -digit description。This four -digit number is also different from our normal thinking，It is understood upside down:Later two representatives are the year，The weekly number of the two representatives in front。0215 as shown in the figure below，It means that it is produced in the second week of 2015。

We must pay attention to see these numbers when buying tires，Avoid buying seabet logininventory backlog products，Avoid buying refurbishment tires。

Replace it according to the wear limit

Tires are in contact with the road every year，Just like our shoes，Is worn。The tire patterns of the tire are all availableExtreme wear mark，If it is worn to the nearby mark，Then you need to replace it。Tires with severe tire pattern，Both grip and drainability will be poor，Continue use will have a lot of safety hazards。

According to my country's current regulations requirements，Tire surface pattern is worn to less than 1.6 mm，It should be replaced。wear marks on the tire，It is also set according to this standard。But in fact，This is just a minimum requirement，Really to this extent，The grip and drainage performance of the tire decrease significantly，Safety will deteriorate。I have seen suggestions from some foreign tire experts，It is said that it is more secure in this standard，That is to say，The tire pattern should leave a depth of more than 3 mm。

If your tires are close toBald Tire，So hurry up，Otherwise, it will be sour when it rains。

Just like this，Obviously it is already seriously aging，We are not reassuring when we use it，So you still have to change as soon as possible。

Replace it according to the degree of damage

Tires driving normally，Only normal wear will appear，But the road conditions are complicated，seabet appThe environment of the tire is far more than the cruelty we imagine。If the tires hit the potholes or crushed the big stones，It is extremely easy to cause damage to the wheel or fetal wall，Caused the tire to produce a drum bag。Once the tire appears, there is a drum，It means that the metal wire inside the tire has been broken，This tire cannot be used anymore，Because it is easy to explode。

In addition to the drum bag，Another serious damage to the tire is cracks。This crack may be caused by rubber hardening，It may also be cut by stones，or being artificially damaged。

No matter what kind of cracks caused by，These injuries are the same as drum bags，Is it impossible to repair，You can only choose to replace。

Replace it according to the number of repair times

General tires are nailing. There is no need to change the tire。If the nails are not tied to the fetal wall，Just stuck on the tire crown，I did not piercing the tire nail，Just pull out the nails directly，But this requires professionals to judge，The owner itself is better not to draw nails。If the nails have been pierced by the tire，Then you need to replenish the tire。

What if a tire has been repaired many times? Will it affect driving safety?

Multiple repair tires will definitely affect performance，But how many times a tire can be repaired, there is no specific standard，Because the size of each repair hole is different。Generally speaking，One fetus can be repaired four or five times，No matter how many more, the technician needs to be evaluated and judged

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