Can a Car with a Patched Tire Drive on the Highway?
2 Answers
Whether a car with a patched tire can drive on the highway depends on the following situations: 1. Generally, car tire repairs are done on the tread. If the tire's wound is not too large, it is acceptable for highway driving. Here, 'not too large' means no more than 6mm, such as a small nail puncture, which is fine. 2. If the wound exceeds 6mm, it is best not to drive on the highway. Additionally, adjustments should be made based on the tire drive type of each car. It is preferable that the driving tires have not undergone any repairs. 3. Furthermore, if the tire repair is not on the tread but on the sidewall, driving on the highway is not recommended because the side of the tire is very thin, and generally, wounds cannot be properly repaired. 4. If the tire has been patched more than twice, it is also advisable not to drive on the highway to prevent a blowout during the journey.
As a long-haul driver who frequently travels on highways, I've witnessed many accidents caused by tire issues. Whether a repaired tire can be used on highways depends on how it was fixed. For small punctures like those from ordinary nails, if professionally repaired with mushroom plugs or patches and passing pressure tests, it's generally acceptable for highway use—but it's best to test drive in the city first to confirm no issues. However, if the tire sidewall is damaged or only temporarily patched, never take it on highways. High speeds increase the risk of tire blowouts, leading to loss of control and endangering yourself and others. Safety always comes first—it's better to spend more on a new tire than risk saving money. After repairs, checking tire pressure and wear is mandatory; I recommend visiting a 4S shop for professional evaluation. After all, no one wants to drive with constant worry.
