I run the Cooper ST Maxx 255/85 with 1/4" steel front and rear bumpers and tire carrier/fuel, 2" 1/4" box tubing for sliders, 12k winch and a roof rack. I run this quite loaded with no problems.
94 80 Series with floating rears
I just got rid of my Toyo 305/70R16s and swapped on the Cooper ST Maxx 255/85R16.... I am also waiting to see the mileage change and to see how they fair in the sand...
ASPW on 4XOverland on Youtube breaks down the cost/benefit analysis of tires.....