So I was in dire need of new tires. Front and rear had chunks of rubber missing. So I decided to go all fancy high dollar and get some Continental GP 4000's at about $75 a tire. Everyone rants and raves about the endless awesomeness of these tires. And I will admit, they ride like butter! But I've had 3 flats since putting them on in the last 2 weeks. 2 rear and one front. One was a tiny little thorn! On my old Bontrager kevlar tires I never had a single flat in like 3000 miles and I rode over all kinds of rocks, broken glass, thorns etc. I hate to do it since they are still pretty much brand new, but I've got to switch these out. I can't deal with that many flats. I think I will try the Gatorskins next.