I bought 31" procomp mud-terrains at the 4-wheel and off road jamboree in Bloomsburg in 2000. National tire and wheel was havin a special buy 3 get 4. It ended up being like $320. They are the best tire I have ever seen for wear with a mud-terrain tread. I ran them more on road then dirt because I commuted an hour each way for a semester during college. I still have them on and they are wearing thin but still not too the wear marks. So if you can afford them I would definately go with the procomps, you won't be sorry believe me
1997 grand cherokee 4.0L, forest green, 3" skyjacker, 1" spacers, adj. front track bar, skyjacker sway bar dissconnects, procomp steering stabilizer, 31" super swamper LTB's, safari bar w/ 2 KC's, custom roof rack w/ 2 KC's, tow hooks front and back, CB, dynomax turbo muffler, custom K&N filter charger, 2 12" sony explode subs.