I recently inherited a 1990 GMC Jimmy 4wd from one of my best friends. He bought it new in '89. It is in great shape and has a new engine. But the tires are near the end of their life. It will get lots of dez use, range trips, will be used to tow my trailer/ATV's, and if I take it to Utah for elk it will be in mud and clay. But on most weekends it will be on paved roads around town. Currently it is wearing Pirelli 32-11.5-15's. It was geared to run with the 32's, but the paperwork has not surfaced yet, so I don't know exactly how it is geared. I have Bridgestone Dueller AT's on my Durango and Toyota truck, and like them for around town and light off road stuff. But for the Jimmy I want something more aggressive, though not crazy aggressive. And some noise is OK, but not a roar when on the freeway. Any suggestions? Also, these tires will dry out before they wear out so what are the thoughts on an off brand? Are they as good as the big names? Suggestions? Any issues going from the 32's (which are limited selection) to 33's? Would new gears be necessary? Thanks, in advance, for what I know will be great answers.