Well I know my belt had been a little noisy for awhile but there were no signs of cracking or breaking down so i let it eat for a while. Ive use car quest belts for a while now and have never had an issue other than it squeaking which i get over really fast. This belt is only about a year old and has maybe a thousand miles on it with maybe 15 quarter mile passes with no problems no cracks nothing until today when each pass it gets worse and worse. So my question is how often and why do you change your belts when you do. I'm pretty sure this is why I couldnt go any faster than 115mph down the track today! Oh and I have a Reichard Racing 2.8 with a forward cut grooves.