Flat tires are the one thing that really pisses me off about road bikes. Mountain biking I hardly ever get a flat, and when I do it's because of landing straight on a very pointy rock. Road biking I get a flat just riding anywhere in a 5 mile radius of a broken piece of glass. Also, replacing a flat on my mountain bike is a breeze. Replacing a flat on my road bike is an obnoxious conspiracy against me. It takes all three of my tire changing levers just to get the tire off. What is up with that? Also, do Armadillos come in larger (32) size for touring bikes?