If your wanting a tire that looks meaner than hell and still gets decent highway milage, check out super swamper thornbirds. I had a set of 33x12.50 and set of 35x14.50. Bot of them were on a fishing truck that went to town for beer as much as it went offroad. I replaced the first set because of dry rotting. They were old as shit and sat most of the winter. The second set I sold to buy a set of 38.5x15.50 boggers. The Thornbirds were pretty decent in the mud and snow and wore like a champ on the highway. They were outstanding in the sand. Honestly, I havent seen a meaner looking tire on the road. They weren't that noisy either. Here is a quick example, try to find them on a truck, they look alot meaner when they are coming down the road at ya.
http://cgi.ebay.com/ebaymotors/Interco-TSL...sQ5fAccessories