I'm rocking a set of 305/65R17 ProComp Xtreme A/Ts (comparable to 33x12.5) and love them both on and off-road. I didn't take that big of a hit on my mileage, they aren't very loud, and they perform well on the trail (lots of rocks and some mud at RC). I considered a 35" but I spend more time on the pavement (unfortunately). These tires have a 40K mile guarantee. Once they go, I'll upgrade to the 35s. I suspect they'll last a while for me as I'm not running them during the winter and am considering only rocking them when we off-road it next season.

 

If it wasn't an ATZ it was a simular treaded allterrain Mickey.