Well, this Bontrager Hardcase tire certainly has convinced me to not talk ill of the Trek-manufactured product line ever again. I have about 6 large on this tire and still only have had two flats. This tire has soo many glass holes and slices in it, I have no idea how it held up this long. Today, I noticed that in one area, the rubber had ripped off completely down to the kevlar. RIP old buddy. (Pretty interest how a strip of the rubber literally tore from the tire. This isn't even from skidding!)