One of the last sights drivers want to see when they are getting ready to drive their vehicle is a flat tire. They realize that in addition to the immediate inconvenience of having to install their spare tire, they will have to get the punctured tire repaired. And if their tire is a steel belted radial (and whose isn't?), it must be repaired immediately to minimize potential long term deterioration started by the puncture.

A punctured speed rated tire brings with it additional considerations. While some tire manufacturers "allow" a tire to retain its speed rating if a specified multi-step repair procedure is followed exactly, most tire manufacturers reason that since they have no control over the damage caused by the puncture or the quality of the repair, they cannot confirm that the tire has retained its high speed capability. Therefore, their policy is that a punctured and repaired tire no longer retains its speed rating and should be treated as a non-speed rated tire.

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