I had planned on going for a ride this morning before work, so last night I prepped the bike. I pumped up the tires (700 x 32 Ritchey Speedmaxes) to about 90 psi, which is what I usually do when I'm going to be riding on pavement. I got dressed in the morning and grabbed my bike to walk out the door and it appeared that the tube had completely exploded. there was about a 6-7 inch gash in the tube and part of the tire bead had been unseated. I can't see anything on the rim or tire that would have cut the tube, and the bike was just sitting in my den where nobody/nothing would have even touched it.

Is this a case of rubber fatigue? It kind of boggled my mind that the thing just exploded on its own.