Ive ridden Intense tires for quite sometime, and yes......when they say FRO, they mean it. What is one day of riding to you? Ive heard of that happening before under circumstances that didnt warrent for that much wear, and they replaced them. You can run the Intense's as low as 16psi, as where the Maxxis' I think are 33-35psi. FRO refers to the casing, and the compound. Yet again, it depends the riding you were doing. 20-25psi for your weight on a Maxxis, I can see why you were blowing tubes, read up what the min. max. pressure is for those tires, it'd be a good guide to follow. The Intense tires are meant for racing, and DHing that you can afford to pay for a quick replacement. They wear fast, the quickest ive found of all tires. So far my 909's have stood up to a full day at MountSnow, and riding on pavement there, few signs of wear in height of knobs, but non tearing off. Say they're the worst tire ever, and using them under the wrong circumstances isnt right. Just like you popping tubes and wondering why its happening when your way under the min. PSI.....good luck man, and id give intense another try if your going to race....or maybe the EX compound.