It is typically not the same material that you can visualize on the inside or outside of the tire. “Run-flat tires, by design, have a very thick, stiff compound in the sidewall,” he said. Consider your dealership’s liability as the ‘tire expert’ agreeing the tire is not damaged, should you repair the tire without knowing damage between the layers. Some allow a repair, some don’t and some allow multiple repairs, noting that each repair lowers the speed rating of the tire. “Always refer to the tire manufacturer’s recommendations on repairs as it can vary by manufacturer. “Repairs of run-flats are a major concern,” says Chris Davis, Continental’s technical product service manager. Note: Continental advises if a tire is returned under complaint and reason for the product’s disablement is in any way associated with a repair or the reason for repair, the manufacturer’s warranty is invalidated.” Continental does not recommend any repair to Continental SSR tires. Such damage may not be visible on the surface of the inner liner or sidewall, making it impossible to determine the tire suitability for repair. The company’s explanation is as follows: “Even a trained tire specialist may be unable to recognize internal structural damage to a Self Supporting Runflat (SSR) tire resulting from having been driven in an under inflated or zero pressure condition.
“Your ZPS tire will be replaced on a prorated basis based on remaining tread depth when the tire has been damaged due to a tread area puncture within the repairable area and limits defined by (USTMA).”Ĭontinental Tire the Americas LLC does not recommend any repair to Continental SSR (Self Supporting Runflat) tires. “ZPS run-flat tires are covered by the Yokohama standard limited warranty that provides for tire replacement under specified conditions,” the bulletin reads.
makes it clear Yokohama ZPS run-flat tires are not to be repaired following a puncture “or other tire disablement.” According to Pirelli’s Run-Flat Hazzard Policy, “damaged run-flat tires or run-flat tires that have experienced a loss of pressure should immediately be replaced with another run flat tire of identical size and service description (load index and speed symbol).”Ī technical services bulletin from Yokohama Tire Corp.
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