Any puncture or injury to a tire affects performance and safety, so a proper repair is critical. However, only punctures in the tread area that are straight-through and 1/4" diameter or smaller may be repaired, if no secondary damage has occurred. Because all parts of a tire are engineered to function as a single unit, a puncture must be repaired on both the inside and the outside of the tire.

A proper tire repair can be made only if the tire is removed from the rim, after a thorough internal inspection, and if the repair is made from the inside out. Then, a vulcanized plug and patch must be used to fill and seal the injury. Only specially trained technicians are qualified to repair a tire, so please do not attempt the process yourself.

Mountain View Tire Safety Advisory: Speed-rated tires that have been repaired must not be used in excess of posted speed limits or in races or other competitions. Speed ratings are not valid for repaired, re-treaded, under-inflated, overloaded, excessively worn, damaged or altered tires.