Can Run-Flat Tires Be Used After Repair?
2 Answers
Run-flat tires can be used after repairing common tread punctures. However, they cannot be repaired if the puncture is too large. Below is an introduction to tire repair: Cases where run-flat tires cannot be repaired: Puncture is too large, exceeding 4.2 mm; puncture is located on the sidewall and cannot be repaired; tire is punctured and leaks air, causing damage while driving and cannot be repaired; tire has been repaired twice and cannot be repaired again. Tire repair methods: A mushroom-shaped rubber patch is used, where the mushroom stem is placed on the outside of the leaking tire, and the exposed part is trimmed off. Special adhesive is used to bond the inside, with the mushroom stem acting as an external reinforcement and the mushroom cap serving as an internal reinforcement. This method is effective and more durable.
I've used run-flat tires before, and one of them got punctured by a nail. I took it to a repair shop to get it fixed. After the repair, the mechanic said it could still be used. I drove with it for a few months and it seemed fine, but I always kept an eye on it. Run-flat tires are designed to hold up for a certain distance even when they lose air, but after being repaired, the structure might be compromised, especially if the puncture is on the sidewall, which can cause more issues. I usually check the tire pressure before driving and look for any bulges or leaks around the repaired area. Safety is the top priority—a blowout on the highway is no joke. It's advisable to avoid long trips for the first few weeks after the repair and to monitor the tire's condition closely. If you notice the steering wheel shaking or hear unusual noises while driving, pull over immediately and get it checked. Having a technician inspect it carefully during regular maintenance also adds peace of mind.
