I wore the 120/80 out, I took the 110/90 out for a bike/ride tuneup/checkout after I got my rear subframe back on. It is narrower than the 120. I was riding in a sand wash and spun out right in front of a 2000lb cow.
The 110 seem to run fine on the bike, I am using a 13 CS sprocket. I think the fork upgrades effects the sand riding more than anything.
The sedona is not DOT, the desert racer @ the shop runs them. I think they hook up good and don't cunk off in the rocks much, I still had all the ***** on the back at the end of life. I don't agressively spin the rear in heavy rocks though, not that I don't twist the throttle. But if all your doing is throwing rocks, I'm not on it.