I got the tire upgrade when I ordered, hoping for Michi's, the on-off road tire I got are Goodyear Wrangler GSA, 235-80r17. They are a asymectric design tire, meaning they are a directional tire.
Which is odd for a duelly, makes rotations simple though they can only run one way. I think the tire is a good tire, it preforms well in the snow and the rain. It also drives good. I don't feel I would have upgraded to them had I know what they were. Not that I'm unhappy with them just don't think they are any thing special.