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Thereof, how long can you drive on a patched tire?
On average, tire experts predict that a proper plug and patch can last from 7-10 years. Although tire patches can last a long time, a tire should never be patched more than once. It can negatively affect the speed rating and potentially cause blowouts.
Similarly one may ask, where is it safe to patch a 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.
A proper repair job with a plug-patch results in a tire able to hold air indefinitely -- that is, unless you get another puncture. It is safe to drive your vehicle like this as long as the tire's useful life.