Needless to say, this is not a good situation and sometimes leads to some tragic consequences. This is likely the most common situation. He doesn’t inspect the tire, he just proceeds without any thought to whether or not it is truly repairable - and without any thought to the risk involved to both him and his customer. The guy who is going to repair a tire, does so without asking questions - he just does it. For this reason, repairs on RunFlat tires carry a hugely greater risk of failure - and hence the warning from the manufacturers and the reluctance of tire shops. While tire shops have been known to repair such tires, they are just being foolishly risky - and with someone else’s life!īut with RunFlat tires, there can be structural damage without the evidence of it - because the damage is between the insert and the rest of the tire. In either event, there is evidence that there may be a problem. indicating the tire is damaged internally (meaning beneath the visible rubber layers, not meaning the inside air chamber!) The sidewalls can also buckle and be damaged that way. When normal tires are operated deflated, the sidewalls can contact the pavement and there will be wear marks. It provides vertical stiffness much like the inflation pressure does in normal tires.
RunFlat tires work because there is a stiff insert in the sidewall. As a tire engineer, perhaps I can embellish the explanation enough so that it is coherent.
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