After reaching about 500 miles I finally had my first flat on these tires. I was running them at 100psi when I ran over a patch of glass that looked as though it was from an accident, very small pieces. I didn't think much of it since I have intentionally ran over a beer bottle before. So I got to work locked it up and went on to my work day. When I got back out to my bike the rear tire was completely flat. Being lazy I called for a ride since I could. When I got home I examined the tire closely and found the piece of glass. Here are some pix...how could something so small ruin my day?