wow had a two week old tire bubble up and come apart last night thought a stone had stuck to the tire reached around to clean it off and felt a wobble and a rip in the tire thank God it was a flat ride I raced a crit on those two tires last week right out of the box maybe 3 rides on them I love those schwalbe "r"'s and have scoured the world for tubulars with no luck ... one ride and now I'm thinking twice