Holy Schnikeees! I know that you are carrying more weight but geesh. How did a nail "shred" your tire? Do you stop when it starts to flatten? I haven't had a single flat in the last 2000 + miles and i ride mainly on unpaved roads. (i know i will have one tomorrow now.) I do run Slime and wouldn't have it any other way. I prefer riding to sitting on the road working on a stinking tire.