First, tread failure
Phenomenon 1: Unilateral wear, commonly known as eccentric wearCause: excessive camber or inversion of the wheel, which is often caused by poor wheel alignment.
Recommendation: Correct mechanical defects and maintain standard air pressure. If necessary, change the front and rear axle tires regularly. It should be noted that radial tires and bias tires should not be mixed on the same axial due to intermodulation.
Phenomenon 2: Diagnosis of local wear caused by braking: Correction of the braking system if necessary.
Suggestion: Avoid emergency braking when driving.
Phenomenon 3: The tread rubber block is shaved offDiagnosis: When driving on the road, sharp foreign objects on the road surface, including debris, may be sliced off
The tread rubber block and may injure the wire loop belt or carcass cord layer.
Recommendation: Avoid rolling foreign objects and debris when driving on the road.
Second, the tire lip failure
Phenomenon: Bulging of the tire edges, cause: Bead damage due to incorrect tire installation. Incorrect use of the tire loading equipment may cause the steel wire at the tire lip to bend, deform or even break, and injure the rubber.
Recommendations: Proper use of tire mounting equipment, application of tyre-specific lubricants, and proper installation of rims when removing and assembling tires.
Special Warning: Broken or bent bead wires may cause bursting when inflating or removing tires, resulting in casualties.
Third, a flat tire
Diagnosis 1: A "puncture" tire caused by rapid air failure may lead to a puncture if it is completely deflated immediately when it is cut or seriously collided with an external foreign body.
Suggestion: Try to avoid potholes when driving, especially at high speeds, and avoid unknown obstacles on the road.
Diagnosis 2: There are three main reasons for chronic air leak caused by "puncture" caused by chronic air leakage:
1. When the car is driving, the tire is nailed or cut, resulting in the damage of the inner liner, resulting in chronic air leakage.
2. After the inner liner is damaged by the nail or cut, it should be repaired, but poor repair will also cause chronic tire leakage.
3. When installing tires, the air leakage was not checked and installed according to the correct operation process, resulting in insufficient air pressure. For example, the valve is not replaced with a new valve, and the valve core, the joints of the tire lip and the rim flange are not checked for air leakage after the tire is installed, and the air pressure is insufficient due to installation problems.
Suggestion: The main part of the car is to prevent problems before they occur, and the key inspection parts include the tread, sidewall and tire lip. The tread should be checked for defective repairs, nails, cuts, etc.; The sidewall should be checked for whether it has been cut or pierced; The bead should be inspected for damage. If the tread, sidewall and lip are intact, then we should also check the valve to see if there is any aging or breakage. Then check the rim for problems. In addition, if the tire is not installed correctly, and the air leak is not checked after installation, there will be a chronic air leak, which will also lead to a "puncture". When installing tubeless tires, it is best to replace the valves for safety.
Fourth, sidewall failure
Phenomenon: Bead Straight Rib Depression Diagnosis: Bead Straight Rib Depression is caused by the bead cord joint. The joint part is a local reinforcement of the carcass. When the tire is inflated, this area expands less air than the area without joints, causing the tire
The edges are partially depressed. In fact, not all sidewall bar dents will affect the safe use of tires. The carcass joint is the overlap of the carcass material (polyester cord) at the joint site in order to obtain a strong joint between the two parts of the carcass. The part of the tire joint causes the straight bar of the sidewall to dent and is a relatively strong part of the tire carcass, which will not affect the safe use of the tire. Generally speaking, the depression caused by the cord of the carcass corresponds to the position of the appearance on both sides of the tire, which is also the way to determine whether it is a normal depression caused by the cord joint problem. In addition to the normal sidewall straight bar depression, the depression in other cases should attract enough attention from the owner. These can be tire failures caused by a cut tire sidewall, tire sidewall impact breakage, or rubber degradation.
Recommendation: Always keep your tires out of contact with hydrocarbons, solvents, or certain acids. Once these substances come into contact with the rubber part of the tire, the rubber will undergo chemical changes in a short period of time, causing the tire to swell, soften or stick.
Fifth, internal failures
Phenomenon: Tire bulge and even lack of glue and air leakage Diagnosis: caused by the breakage caused by excessive stretching of the carcass cord. When the car is driving, the tire shoulder or the sidewall close to the shoulder is deformed due to strong impact on external foreign objects, such as potholes, curbs, large stones, etc., and the tire is seriously squeezed between the rim flange and the impact.