I guess you have it coming after 4000 miles of commuting from October through March. I've got to hand it to these tires, commuting from Midtown to KCK everyday is no easy task for any rubber. I had about 3000 miles on my rear 32c Soma New Express and rotated it to the front last month. Sucks even worse when it happens in the rain...it is dark and you can't see anything on the road, you just go and pop! Looks I will be getting my hands dirty during Lunch. I'll still try getting another 1000 on it, maybe I'll put one of those super heavy no flat strips in there.