I am getting my new to me fj62 on the road today. It has BFG Km2s 255/85-16s. I want to make sure air pressure is correct in them, but according to Tire Rack and the specs on the side of the tires the psi is supposed to be 80. That seems really high for a 3 ply tire...but then I again, I don't much. What do other people run in these tires? Thanks much.