Originally Posted by
InTheRain
Once in the last 5 years on my commuter. Specialized Armadillo all condition wire bead 700c x 28.
Ditto - and it was a faulty valve that was the culprit. But while inspecting the tire to see if there was anything in it, I found lots of rocks and glass shards that had dug into the outside of the tire, but had not punched through to the tube.
I have the 'Dillos on my road bike, and Schwalbe MP's on my utility bike. No flats on the utility bike yet, and I've crunched right through big shards of broken glass.