A brand-new bias-ply for the trail, brought to you by the Pit Bull Tire Company. Never heard of it? Don't worry, you will-at least if our findings are even close to what these new tires seem to be capable of. Built on a trail-friendly four-ply nylon carcass, the Pit Bull Rocker has a very nicely rounded tread arch, which promised great trail performance. On the other hand, the tread design left us guessing. There are tread blocks the shape of Texas, and darn near the same size, which didn't bode well for our lightweight test vehicle as it could result in less-than-ideal contact pressure-especially with a generous 12-inch tread width. Also, some shoulder lugs were a bit on the large side for being conducive to tread flex, we thought. Well, those things could always be fixed with a grooving iron, we figured, but first we'd have to test the tires as delivered.