I just retired a pair of 28's tour gaurd at 2500 miles, just one flat. But the rear had quite a few cuts when I took them off. I had used them on a short stretch of a dirt road on my commute towards the end of their life, which probably took its toll on them. Otherwise I recommend as a great commuting tire. I commute on good roads in AZ, but farther north in the potholes, a wider version would be my choice.