I have 2 seasons on my Panaracer T-Serv tires. They are 700X25 and have about 3500 miles on them. I have had one flat on each end of the bike- one was from the tiny wires from a steel belted radial car tire and the other was a pinch flat (I was in a hurry and didn't check my pressure after a couple of days). The rear has a flat profile now, so it is on my trainer for the winter and I already have a new one ready to go on the bike. My wife has 700x28 T-Servs on her Sirrus, and had one flat this season as well. Three flats on four tires in two years is an awesome track record as far as I can tell.