Hello everyone, this is a column focusing on car repair and maintenance. There are car secrets you don’t know here, and it will teach you how to avoid big pits on the road to car maintenance. I believe that not only you, but also many people have a certain hazy feeling about the automotive aftermarket. Here will help you uncover the unknown stories of car repair and maintenance.
Tire repair is very common in daily car maintenance, but when you go to a tire store to repair tires, you will find a problem. As long as the tire wall is injured, almost all tire repair shops say that the tire cannot be repaired and recommend that you directly replace it with a new tire. Is it really impossible to make up for it, or is there something fishy?
This issue of Xiaobian will take you to understand: Why technicians never repair tires with damaged sidewalls!
There are only two types of contact surfaces where tires can be injured, namely the tread and the sidewalls on the left and right sides. Among them, tread injuries are the most common. Although the probability of sidewall injuries is relatively small, they can also be encountered.
Touching nails in the tread is like walking and stepping on ants. The probability is too high. Although the roads are very smooth nowadays, it is inevitable that you will walk on some bad roads when driving, and piercing nails is already a common thing.
How to repair a tire with a tread injury?
The method of repairing a tire with a damaged tread is very simple and can be repaired by all tire repair shops. In the early years, fire repair was used (heating the area to be repaired). In recent years, due to the better effect of cold repair and more convenient, most tire stores have adopted cold repair.
A very common tire repair patch. Nowadays, this method is basically used for tire repairs. There are also individual tire repair shops that use mushroom nails for tire repair.
Second, why don’t technicians repair some tires at all?
When inspecting tires, many technicians will directly recommend replacing the tire with a new one if they find that the tire wall is injured, which is very decisive.
Tire wall injuries are mainly divided into the following three situations.
1 Severe injury to the fetal wall
Tire wall injuries are really common. It is very possible that you accidentally rub against the curb next to you while parking, and cracks will appear in the tire wall.
2 Tire bulge
I believe that performance car players will be familiar with the situation of tire bulging. Tires with low flat ratio are very, very easy to bulge when passing through bumpy roads.
3 Rolling marks appear on the inner wall of the tire
In most cases, when rolling marks appear on tires, the owner cannot see them, because they can only be clearly seen by removing the tires.
The main reason for the crush marks on the inner wall of the tire is that the tire is running low on air. After the tire lacks air, the tire wall completely collapses, and the constant twists and turns cause the inner wall to be injured.
One thing all three conditions have in common is that the injury is located on the sidewall. The sidewall is the most fragile part of the entire tire. Once it is injured, the inner cord layer will basically break. It’s like a concrete wall without steel bars that collapses with one blow.
When the car is driving, it is very likely to cause a flat tire. There is no need to introduce how dangerous it is to puncture a car driving at high speed. Therefore, any technician would not dare to repair your tires.
BernardDaniel 
5 
September 9, 2024 
