Run flat tires have become increasingly popular in recent years due to their ability to continue functioning even after a puncture. However, the question remains: can run flat tires be repaired after such an incident? The answer is not as straightforward as one might hope.
The Reinforced Design of Run Flat Tires
Run flat tires are designed with a reinforced sidewall that allows the tire to maintain its shape and support the weight of the vehicle, even when the tire is deflated. This feature is what sets run flat tires apart from traditional pneumatic tires and is the reason why they can continue to be driven on for a limited distance after a puncture.
Manufacturer Recommendations on Repairing Run Flat Tires
Despite their unique design, most tire manufacturers advise against repairing run flat tires after a puncture. The reason for this is that the reinforced sidewall can mask any secondary damage that may have occurred to the tire’s structure as a result of being driven on while deflated.
If a punctured run flat tire is driven on for too long or at speeds exceeding the recommended limits, the tire’s internal structure can become compromised, making it unsafe to repair. Tire fitters have no way of knowing for certain whether a punctured run flat tire has been driven on in an unsafe manner, so they err on the side of caution and recommend replacement instead.
The Risks of Repairing Run Flat Tires
Attempting to repair a run flat tire after a puncture can be a risky proposition. If the tire’s internal structure has been damaged due to being driven on while deflated, a repair may not hold, and the tire could fail unexpectedly while driving. This poses a serious safety hazard to the driver and other road users.
Additionally, if a repaired run flat tire fails and causes an accident, the driver may be held liable if it can be proven that the tire was not replaced as recommended by the manufacturer.