Thanks to all for all the very valuable tire info! You guys are a tremendous source of good information. It looks like I paid $56 for the wrong tires (2 Michelin Axial Carbons). I thought I was getting a rugged, non-flat tire. Next time, I will get the Specialized Armadillo turbos. But for now, I will try to get my money's worth out of the Michelins, since I am a man of modest means. I did buy two self-sealing tubes from Bike Nashbar for $5 apiece, and put those on. Maybe I will also add a Mr. Tuffy to the back tire. I guess a light racing tire with a heavy self sealing tube is counter-productive, but when you're new to biking, one does make some expensive mistakes! Thanks again for all your valuable input. This Forum has been a tremendous revelation to me. Happy Thanksgiving to all. PS: Is $56 for 2 Michelin Axials a good price? (includes handling and shipping). I got them from Road Tires Direct. They were very prompt. I had them 2 days after placing the order on the internet.