IROK\'s work pretty good here in the Midwest Im not finished testing these tires, but my maiden voyage seemed to test them in muddy trails, rock bottom creeks, and shale piles. Im definately impressed. I noticed on one occaision with their high voids, they cleaned out as good as similar sized TSL's. I pulled into a "Fo-tee" sized mudhole and actually felt the D60 bottoming out on a rock. I just hammered the throttle and it flung poo nicely! /forums/images/graemlins/grin.gif I have Zero balance weight on these tires and they are mounted on home made beadlocks! The ride great on the highway with a slightly noticeable hum.