For a 20" x 9" rim? ...
Your Avatar looks like you're running 20s to me anyway.
Some of the ATs in a 325/60/20 D rated look like your best bet, (especially if you do have 20s).
- Pirelli Scorpion ATR
- Kumho Road Venture AT KL-78
- BFGoodrich All-Terrain T/A KO
- Toyo A/T
- Nitto Terra Grappler
First three can be read about
here.