Originally Posted by Eclectus

My wife just blew her tire and needed a p/u. It was a Spec Armadillo. It was a great tire. I noticed and told her a few weeks ago we'd have to change it soon (really worn). So she rode it until the casing blew out, centerline. New tire goes on tomorrow AM.

Generally, if the tire is still good, and you have good inflation pressure, most flats will be punctures. Feel around the inner casing by running fingers around it, feeling for a sharpie, and remove it (or if not possible on the road, use a fingernail to flatten it down, or put some duct tape or a rubber patch over it).