I'm not denying that its a good tire...but in my experience its just not the most puncture-proof tire out there, even in its own weight/performance class. I'm ~200# and ride relatively decent roads and I've never been able to ride a Krylion tire for more than a few hundred miles without getting a flat. Maybe we encounter different amounts or types of debris. For me, its almost always a very small puncture that deflates slowly. The worst enemies of the Krylion Carbon are very thin bits of wire, it think from car tires, that work their way through to the tube. Continental Ultra Gatorskins are apparently immune to the same objects because the only flat I ever got with a gatorskin was after riding through a debris field from a huge multi-car pileup.