I have an '06 TJ with 4" lift and 1"BL, so 5" total, factory flares. I run 36" Tsl SXs offroad on beadlocks, you'll need to extend bumpstops front and rear or you'll rub when flexing. On the street I run 35" BFG ATs and runs great, ride 75mph keeping up with I75 all day no issues.
I run the HP30 and 8.8 as well, for about 3 years now.
FYI.. I hear A LOT of KM2 get cut sidewalls!!! not sure I would run 'em in the rocks.
I know a couple guys who run the 37" Pitbull Rocker Radial and love them.