Most tires are only flat on the bottom, that ones flat on top too!
I had a front tire 33x12.5x16 blow out for no apparent reason once. I parked in front of my buddies apt. building. I walked around the front of the truck, got about 15 / 20 feet away from the truck, and KABOOM! I turned just in time as I ducked to see the front of the truck dropping rapidly. My dog inside looking like, what the heck?