How do you see the degree of wear and tear of a tire? How often do tires need to be replaced?

Car tires are one of the most frequently replaced car consumables, so how to see the degree of wear and tear of tires? How often do you need to change your tires? In this article, I will briefly share this knowledge:

The best way to see how worn the tires are is to look at the thickness from the top to the bottom of the tread groove. Basically, every tire will have a wear mark at the bottom of the tread groove. Generally, the height of the wear mark on the tire of passenger cars is millimeters (this height is also the legal minimum groove depth of the tire), and the height of the wear mark on the truck tire is millimeter.

If you find that the wear mark is the same as the tread, it means that the tire is almost worn out and should be replaced in time. When the tire pattern is worn to the level with the mark, the grip performance must be reduced a lot, which will affect the braking effect of the car, and there are certain safety hazards. Secondly, the drainage of the tires is also affected, so when driving in rainy days, you may play a little more steering wheel, and the danger of "water drifting and slipping" will occur.

Therefore, when the tire is worn to the wear mark, the tire should be replaced in time so that the driving is safer.

Generally, tires have instructions, and the labels on them are about three to five years. Internationally, its life span is generally set at three years, that is, even if it is not used, it cannot be used again after three years. If it is a car that is driven daily by the family, it is likely to be used less, and the wear and tear and mileage are very low, so it depends on the time.

The number of years in China and internationally has also been mentioned above. In addition, the spare tire has been placed for a long time, and it is likely that it has not been used, so it should be replaced in time. Because tires are known to be made of rubber, it will age, so it is still a dangerous thing to exceed the age limit.

For different manufacturers, the age may be different from the regulations, so after the specified years, a professional inspection must be done every year, so as to ensure safety.

In addition, tires with abnormal conditions, such as bulging, repaired many times, cracks, etc., can no longer be used, and will be more likely to occur**. How many times is it considered to be repaired? Generally, if the tire is repaired more than three times, it is recommended to replace it with a new tire.

Many people say that repaired tires can't go on high speeds, and that's true. Because no matter how well the repair is, high speed makes repaired tires easier**, so it's best not to go on high speed. There is also a special situation of being pierced, that is, it is pierced close to Lun Yi.

It's basically hard to repair over there, so it's better to replace it. Usually we should also pay attention when driving, not as a last resort, try to drive on the road in good condition, so that the tires can have a longer life. If it's time to change the tire, replace it immediately and don't joke with your life!

You can look at the depth of the tire rim groove, the deeper the depth, the more wear and tear, the tire needs to be replaced every three years.

Judging from the tread on the tire, the depth of the tread can reflect the degree of use of the tire, and the tire should be replaced once in 4 to 5 years because of road wear.

It depends on the degree of wear and tear of the tire shape, and there are many stripes in the shape of the tire, depending on the depth of the stripes, and the wear degree of the shallow stripes is generally large, I recommend replacing the tires Generally speaking, the replacement time of the tires is related to the degree of wear.

Car tires are generally changed once a year to two years, because the life of the tires is relatively long, but after one or two years, the flowers on the tires have been worn out and vulnerable.

It needs to be replaced according to the number of kilometers in the form of the posture nucleus and to some extent, and it is possible that the number of cherry blossoms will be changed every 2 or 3 years. It depends on the start time, but it can also be replaced according to the degree of wear.

Car tires are usually replaced every 5 years or 80,000 kilometers. When replacing tires, the first thing to look at is the surface of the tire, and whether there are cracks and bulges to repair the number of times. Or a scratch on the side.

The degree of wear of the tire, the degree of wear of the open tread and so on.

Look at the way to replace tires with wear:

1. Slowly touch the ribs of the tire with your fingers, and there will be a protrusion at intervals to block it, and that protrusion is the tire wear mark, corresponding to the TWI mark of the tire shoulder. That protrusion thickness is;

2. Observe the lines on the tire tread and sidewall, if cracks are common, it means that the tire has been seriously aged. At this time, although the mileage is not long or the service time is not long, it still needs to be replaced when the dust is clear. Otherwise, the aging tire is prone to puncture due to the weakening of the sidewall strength and the rise in temperature during high-speed driving;

3. The habit of regularly removing foreign bodies in tires. When the vehicle is driving on the road, there are often some stones squeezed into the tread gap of the tire. If these small stones are not removed in time, they can puncture the tire over time, resulting in a flat or puncture.

Observe the degree of tire pattern wear To observe the degree of tire wear, the best way is to observe the thickness from the top to the bottom of the tread groove, and the thickness of new tires is generally about 8mm.

Observe the degree of tread aging The aging of tires has a great relationship with the environment, and the normal service life is about 6 years. And the harsh environment will accelerate this deadline.

Severe damage to the side or bulging Tires are generally injured and rarely hurt the side. However, it is very dangerous when the side is bulging and deformed, or the injury is more serious.

After more than three tire repairs After the tire is damaged or punctured, tire repair is a more economical and effective treatment. But it doesn't mean that you can "break the mirror and reunite" after the tire is repaired...

When the tire is worn to the point where the wear mark is at the same level as the tread pattern, it is important to replace this level. The bottom end of the tread groove of each tire will be equipped with a wear mark, and when the tire texture is about to wear out, the following hazards will occur:

1. The grip characteristics must be reduced a lot, which will endanger the actual braking effect of the vehicle and have certain safety risks;

2. The drainage pipe of the tire is also somewhat harmful, so in the case of driving in rainy weather, it is very likely to hit the steering wheel of the car a little more, which will produce the risk of "water drifting and slipping".

Generally, the height of the wear mark of the car tire is this height, which is also the minimum depth of the groove of the tire as prescribed by law), and the height of the wear mark on the load tire is. When the tire is worn to the point that the wear mark and the tread pattern are not much to sell the piper, it should be replaced immediately.

The uneven wear of tires is generally caused by abnormal tire pressure, rotor dynamic balance problems, four-wheel alignment problems, and other problems caused by dismantling and replacing tires.

Uneven tire wear due to misalignment of the four wheels can cause initial wear on the outside of the tires when the camber of the wheels is slightly larger than normal. If the camber angle is small or non-existent, the inside of the tyre will wear out in the morning. At this moment, it is necessary to use a car repair shop to do a four-wheel alignment to repair the direction of the tire, otherwise the problem of uneven tire wear will become more and more serious.

The tire pressure is abnormal and the tire wear is uneven, the tire pressure is too high and will cause the middle wear, and the tire pressure is too low to cause the wear on both sides, and it is also possible that the standard air pressure difference of the four tires is too large; If it is a rotor balancing problem, it is necessary to redo the rotor balancing.

Other problems in replacing tires refer to the tires that are not the same as the original tire specifications or model specifications or textures, which will also cause uneven tire wear. Uneven tire wear will not only reduce the handling performance of the whole vehicle, but also have a certain harm to the service life of the tire, and even have a certain probability of tire puncture, so the problem of uneven tire wear must be paid attention to.

Look**Feel OK (pay attention to the third one, it seems that there is a scratch on the sidewall, as long as it does not hurt the cord layer, you can continue to use it, it is recommended to replace it to the rear tire, and you need to pay more attention to it at the same time, especially before preparing to run high speed and long distances, check whether there is any air leak, and see if the damage to the tire has been aggravated) Hall fierce, the tire can continue to drive 1-2w kilometers, for reference.