Interesting timing on this thread. I had my rear ultra gatorskin blow out while on my rollers tonight. It was more on the tread than the sidewall, so I assume it must have had a pretty good cut on it or something, then the added heat of the rollers.....boom. I'm glad it was raining tonight and decided to ride inside. The tire had over 2000 miles on it, but the tread still seemed pretty good.