I am not a racer but have hung out with quite a few and have spent many hours at a race track but I do not have the experience of many of you here on the board. Ill give my .02 anyway..... Brake pad unbonding is unacceptable. I don't care how old they are and I don't care how thin they are. If the pads had lost there feel or there stopping power and the reason given was that they were old I would be fine with that but not unbonding. These are life and death items we are talking about here. If I am running WOT down a back straight the last thing I want on my mind is if my brake pads will stay together or did I happen to buy a set from a bad batch......... There are enough other brands out there....... I don't see the need to use a questionable pad at this time.