I have a question about the use of race takeoffs. I just picked up a super cheap set of Diablo Supercorsa race takeoffs and I was wondering how I can tell how much life the have left in them. There seems to be a fair amount of tread depth left all over, and the rubber steel feels soft and supple (i.e. not heat glazed). I have heard that sport bike oriented tires can only be heat cycled a finite amount of times though, is that true? If the tire still feels good and has a fair amount of depth left on it, is there anything else I should check before slapping them on my bike?