I happen to love them.
Ride Quality :
On the road they are loud, no if and's or buts about it, but they are no Bogger. Ride quality is about as decent as you can get from a bias ply tire, depending on the "sweet spot" you can find with air pressure to get them to run decent. Cold, they flat spot and it takes a few miles for them to get back to normal but after that they are fine and smooth out.
Sidewall Strength :
Well, I can tell you that the last time that I had My Samurai out I had the air pressure so low that my gauge wouldn't even register the psi in them and I had NO problems at all. I actually watched the front tire fold over on itself and twist while I was turning. No problem. In the rocks they are just as good. With the same psi as said before, they climbed, clawed there way up and over about everything I pointed them at. The sidewall flexes pretty well, just hard to get it to flex on a Samurai... I have to run really low air before I even get a bulge. There are vids of the Samurai (recent ones) in the York's property post of me running a muddy washout and playing on some rock.
Here is the tire flexing on a rock the size of a football.
Rock, Mud, Snow :
All three can be answered with a simple answer. No problem.
Rocks : They are sticky enough, when aired down... they do really well.
Mud : Let's just say the LTB is a Swamper TSL with bigger, more offset outer lugs. Mud is no issue.
Snow : As long as you give yourself plenty of stopping room and don't drive like a complete jackass you'd be fine. I went everywhere I ever wanted the past couple of years in the snow. Not a single issue. The 35" LTB even has siping in all the lugs which should help in the snow and with head and longer life span of the tire.
Here is a link that was just given to me because I have a "what tire next" thread going on on another forum, just thought I'd share it w/ you.
http://www.offroaders.com/reviewbox/...&cat=3&ppuser=