I run 'em in 34x12.5 size on a 15x7 rim. I absolutely love them. They are as quiet and handle as well as the BFG AT KO's they replaced, and they ride better (I run them at 25 PSI as opposed to the BFG's, which needed about 31 PSI or higher to handle properly).
The best thing is how good they are in the snow. They are better than the BFG AT's on packed road snow, and of course there is no comparison in deep snow. They are good enough in slick conditions that I got sick of sliding around in the Bridgestone all season tires that came with my new Subaru, and I replaced those with winter performance tires. Offroad, the trXus perform admirably. I have no complaints.
Highly, highly recommended if you need a good road tire, live in a snowy region, and don't want to give up good offroad performance. If you don't live in a snowy region, you might find the MT/R to be a better rock tire, but I'd rather have the trXus for mud and snow.
Nay