Unfortunately stuff happens to make a tire irreparable, I know this spring I lost my 2nd Conti Gatorskin in as many years when the wire bead, (the other was a Kevlar bead) separated from the sidewall for no apparent reason, which made the tire useless. Fortunately I was not on tour so it wasn't catastrophic but still a royal pain to call for help. Maybe why I'm leaning towards Vittoria's line of tires more recently.