Driving on the road, suddenly found that the tire was punctured, which is a phenomenon that all car owners do not want to see. But if the punctured tire is to continue to be used, it is necessary to pay close attention to the tire repair. There is a question when filling tires: should it be repaired internally or externally?

tire structure

At present, the vast majority of vehicles use pneumatic tires. Pneumatic tires are divided into two types: inner tube tires and tubeless tires.

The characteristics of inner tube tires are: strong load capacity, can increase the air pressure to bear the load, and the carcass is very strong. But it's a low-speed tire. The heat dissipation is not good. Once the speed is fast and the temperature is high, it will not be wear-resistant. And if it gets stuck on a nail, the tire air will quickly run out.

The advantages of tubeless tires are: when the tire is punctured, the pressure will not drop sharply, and you can continue to drive safely; there is no damage caused by friction and jamming between the inner and outer tires in tubeless tires; good air tightness, you can directly Heat dissipation through the rim, so the working temperature is low and the service life is long; the structure is simple and the mass is small. But it's not a heavy duty tire, it can't be overloaded, it can't pull heavy, and the tires have flimsy sides.

The difference between internal and external supplements

Experts said that this method of patching small holes in tires is only used in temporary emergency situations, and it is a method that is gradually eliminated. Because the material of the external repair is often different in strength from the original tire, the tire will be inconsistently stressed after repair, and the tire frame is easily deformed. Moreover, the degree of sealing of this external repair method is not high, and air and water easily enter the tire, resulting in steel in the tire The lines are rusted, and there will be safety hazards when driving at high speed. Some tires are scrapped after only three or four months of external repair. Therefore, it is recommended that car owners find a professional repair shop for internal repair of tires that have been repaired externally.

In contrast, the method of internal tire repair is much more complicated, and it needs to be equipped with professional tire disassembly tools. The tire is disassembled from the wheel hub, and after finding the hole, it is heated with a special vulcanizing machine for hot repair. . Larger wounds can also be filled with this method.

Most of the general tire repair shops only provide simple external repairs, which are done by sticking adhesive strips with super glue and drilling into the holes. The cost of repairing is about 20 yuan. The hot repair method is more expensive, such as 25 yuan to 30 yuan for small holes, and about 70 yuan for larger wounds. But the benefits are obvious, and it is safe to use.