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Must a Run-Flat Tire Be Replaced After Being Punctured by a Nail?

2 Answers

EleanorMarie

07/24/25 5:03am

Whether a run-flat tire needs to be replaced after being punctured by a nail depends on the location of the puncture. If the nail punctures the tread of the run-flat tire and it is a small nail, the tire does not need to be replaced and can be used normally after being repaired. However, if the nail punctures the thinner sidewall of the run-flat tire, it should be replaced to avoid potential hazards during future use. After a run-flat tire is punctured by a nail, do not remove the nail immediately; you can continue driving for a short distance and then go to the nearest repair shop for maintenance. Since the nail inserted into the tire does not significantly damage the tire's structure, the repair can be completed by simply patching the hole in the steel belt, cord, and polyester layers. The technical name for a run-flat tire is 'tire pressure monitoring system (TPMS) tire,' and the inflated tire's sidewall is the main part that supports the vehicle's weight.

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McTessa

08/11/25 12:43am

As someone who has been driving for over a decade, I believe that run-flat tires don't necessarily need to be replaced immediately after being punctured by a nail, but safety should always come first. Run-flat tires are designed to continue driving for dozens of kilometers after a puncture to reach a repair shop, so there's no need to panic if a nail is found. However, the issue is that the nail may cause internal damage, such as puncturing the sidewall or leaving small cracks. Once the tire temperature rises during high-speed driving, it may not hold up and could lead to a blowout, causing dangerous steering wheel vibrations or loss of control. My advice is that if a nail is found, drive slowly to a professional repair shop as soon as possible, never exceeding 80 km/h. At the shop, have the technician thoroughly inspect the tire. If it can be repaired with a patch, it saves money and hassle, but if the damage is severe, it's better to bite the bullet and replace the tire. It's also important to develop a habit of regularly checking tire pressure to catch small issues early and avoid bigger problems.

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