C load range is adequate for the Xterra.

Also, if you are looking for a AT type tire that caost a little less, consider the Pirreli Scorpion AT and the Yokohama Geolander AT II+. Schlud and ChuckH in the PNWX run them and like them alot. Carlton ran the Geolanders at his primary tire for a while too, so he might be able to answer some questions about them.

Of course, these are AT type tires and will not perform in the mud as well at the Dunlop Radial Rover RT's or true MT tread designs.