My 28mm Gator Hardshells went 5k miles with only 1 flat in the rear, none in the front. Actually, they started delaminating around the bead. Just swapped them for 25mm with about 500 trouble free miles so far. Also I've been running them at 120 psi and they do love a smooth road. They feel so good in fact I regret not going to the 23mm.