After consulting the Forum, I decided to buy two Michelin Axial Carbon tires because they were known to be flat resistant. Yesterday, my first time out with them, I got not one, but two flats, caused by very small, but sharp thorns. I managed to fix the first flat, but the second happened after dark and I had to walk the damn bike five miles to get home! Didn't someone on the Forum say this clincher is the only tire to ever win a Tour segment? I paid $56 for two tires, including tax and transportation. Got them from Road Tires Direct. Maybe I need self-sealing tubes, or maybe Mr. Tuffy liners?