Have just put a set of 4 - 265/70*16's BFG AT's ont he beast and have to say they're quite for an AT, but haven't had chance to get them dirty yet!
The larger size seems to have helped with conering as well, although that might just be because the sidewalls etc are stronger on the AT's than the old Wrangler HP's that were on there before.
HTH
Cheers
Carl