I've been riding them for a few weeks on the local trails and they work great. I've run over tree roots and edges of rocks and they've held up really well without any flats. I've also ridden them on the roads in the neighborhood and they roll pretty good. So far this Bontrager tire is the only one I have tried which fits the bike and clears everything without rubbing. Since my original post I have purchased an extra set of 700c MTB (WTB FX 28) wheels to put these tires on. Now when I want to ride the paved roads and trails I just change back to the original wheels with Bontrager H2 tires (700 x 35). Of course the other tires with the lower tire pressure are a lot more comfortable.