How to detect tires

Car tires, including spare tires, must be checked regularly every month. During inspection, observe whether there are cracks or scratches on the tire surface at the same time. It's best to put on gloves and stretch out to the inside of the tire to check whether there are suspicious traces. If any suspicious point is found, please ask the car dealer for detailed inspection immediately. Don't be reluctant to throw away the defective tire. If you find that the tire surface wear is abnormal, you should think that there may be a problem with the toe adjustment of the wheel and have to repair it. In daily life, it is necessary to test the tires in the following aspects:  

① Outer edge wear

Cause: if you observe along the driving direction, there is large wear on the outer edge of the tire, which indicates that the tire is often under inflated, that is, the pressure is not enough.

Solution: check the tire pressure several times. If possible, inflate according to the "expressway" standard, that is, add 30000 PA more than the normal standard. Moreover, it is generally believed that since the tire is under inflated, it is conducive to driving in snow and sand, and it can also be so on wet ground. It should be noted that under inflated tires are very unfavorable to driving in rainy days, and the grip will be significantly weakened.

② Convex and corrugated wear

Cause: if it is found that both sides of the landing part of the tire are convex worn, and the periphery of the tire is also corrugated worn, it indicates that the shock absorber, bearing, spherical coupling and other parts of the car are seriously worn.

Solution: due to the high cost of replacing a new tire, it is recommended that you check the wear of the suspension system before replacing the tire. If it is not serious, you can choose to replace the worn parts. Otherwise, even replacing the tire will not help.

③ Uniform surface wear

Reason: it is normal for the tire to wear evenly, and each part will have corresponding performance. Once the pattern has been worn dry, it indicates that the service life of the tire is exhausted. At this time, it should be replaced. In addition, the pattern also has the effect of draining water in the road area.

Solution: never make your own tire patterns. If the wear has reached the standard depth of the tire pattern (usually 1.6 mm, 2 mm for tires with a width greater than 175 mm). Of course, the degree of wear will vary, but it should be noted that the wear difference of different tires on the same axle shall not exceed 5mm.

④ "Hidden injury" in tire

Cause: after the vehicle collides with hard objects (such as hitting the edge of the sidewalk), or after driving under the condition of flat tire, the rubber layer of the tire will have serious scratches, affecting the sealing degree.

Solution: if the wound is small, of course, it can be repaired in case of need. However, if you want to drive long distances, you must replace it immediately.

⑤ The center part is worn

Cause: if serious wear is found in the central area of the landing part of the tire, it indicates that the tire is often over inflated, which is not conducive to tire maintenance, but accelerates tire wear.

Solution: first, be sure to check whether the pressure gauge is accurate and adjust the pressure. Only when driving at high speed or under heavy load, it is necessary to inflate the tire excessively, which is not necessary under normal conditions.

⑥ Tire side crack

Cause: due to poor maintenance or driving on stony roads and construction sites, hard objects contact the tire, causing damage to the inner layer of the tire under heavy pressure.

Solution: take immediate action. If the repair fee is not too expensive, it is better to repair it, otherwise it is necessary to replace the tire. Although new technology has been applied to today's tires, they are more delicate and should be properly maintained.