I got one of these tires when my front wheel got ripped off, and it was a revelation! I quickly bought one for the rear, and never looked back. They are fast, smooth, and grippy. I don't recall more than a couple of flats and I commute daily in Winnipeg pothole city. You do have to 'get light' on the bike over the big bumps, but oh well, that's a fast tire for you and I run them at 90-100 psi.