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Fill up inside or outside the tire
Tire repair methods can vary significantly between different shops, with some opting for internal repairs and others using external patches. But what exactly sets these techniques apart, and which one is safer or more effective?
In today's world, tire punctures are often caused by sharp objects like nails or glass, and nail punctures in particular have become quite common. Since there aren't many professional tire repair centers available, most car owners tend to replace their tires temporarily and then look for a nearby roadside shop to fix the damage. These small repair shops usually offer simple, cost-effective external patching solutions, where they use glue sticks to seal the hole from the outside. A single repair might cost as little as 10 yuan, making it an attractive option for budget-conscious drivers.
However, experts warn that this method is only a temporary fix and is gradually being phased out. The reason? External patches often don’t match the strength of the original tire material, leading to uneven stress distribution. This can cause the tire’s structure to deform over time, and the seal isn’t always reliable. Air and moisture can seep into the tire, causing the inner steel belts to rust and creating serious safety risks, especially at high speeds. Some tires repaired this way may need to be replaced within just three to four months.
For this reason, it's strongly recommended that anyone who gets an external patch should follow up with a professional repair shop. Internal vulcanization, on the other hand, is a much more thorough and long-lasting solution. This method involves removing the tire from the rim, locating the puncture, and using a vulcanizing machine to heat and bond the patch properly. It allows for repairs on larger wounds and ensures a stronger, more durable fix.
While internal repairs are more expensive—ranging from 15 to 20 yuan for small holes and up to 50 yuan for larger ones—they offer far greater safety and longevity. If you want your tires to last longer and perform safely, investing in a proper internal repair is definitely worth it. Always choose a reputable shop with the right equipment to ensure the job is done right the first time.