Many times, a simple object such as a nail in the tread can result in severe damage to the sidewall that cannot be seen on the outside of the tire. Puncture repairs are limited to the center of the tread area. If there are punctures or damage in the shoulder or sidewall of the tire, it is not repairable.Similarly one may ask, can a tire with sidewall damage be repaired?
Unfortunately, even though any one of several objects or events can cause your tire's sidewall to puncture, there's only one solution: replace the tire. Unfortunately, sidewall punctures on passenger or light truck tires can't be repaired.
With every revolution, a tire runs the risk of being punctured by a foreign object and since the average tire will experience millions of revolutions throughout its lifespan, it is usually a matter of when you get a flat, not if. Knowing the difference between a proper tire repair and an improper tire repair could be critical to your safety.
When an object such as a nail breaks through the innerliner of a tire, the most immediate concern is the loss of inflation pressure. But the long-term risk is that the instability around the penetrating object can lead to a tread separation.