Got a flat that made the air exit the tube real quick. Probably due to the hole in the tire that's been worn through. Stupid Conti Gatorskins only good for 4 years of day in/day out commuting, errands, charity rides, weekend rides, fun rides, all other riding. I'd have replaced them, but probikekit stopped carrying 28's and I've been to cheap to buy them elsewhere while hoping pbk would stock the 28's again.