Years ago I used to always carry a spare tire with me but over time and after having never experienced anything that couldn't be adequately repaired to get me back on the road, I quit carrying one. Then on yesterday's shake down ride for an upcoming tour, this happens, a kevlar bead separates from the sidewall. Almost new Continental Gatorskin, only a couple of rides with just a touch over 100 miles on it. 100 PSI with a 175lb rider and no gear. Never saw it coming. I may have to rethink carrying a spare with me because had this happened on tour, I'm screwed and even MacGyver's not getting me back on the road. Then it's a matter of looking for someone nice to take me to the nearest town in hopes I can find a 700c tire. So have you ever had this happen on a tour? just the facts please!