I am just starting on a set of Gators on my new bike, so I only have about 60 miles on them. In those 60 miles, they have seen some chip seal, broken pavement, and even some dirt/gravel and are no worse for wear. I am hoping they hold up well. I am used to riding 32c tires on the road, so even these 28c tires are taking some getting used to. The flat resistance/durability of these tires is something that is still in the back of my mind just because they look more fragile than what I am used to riding. From what I read, the Contis are pretty good tires, so we'll see.