Getting ready to put 285 70 17 terra grapplers on and I know there has been a ton of proper air pressure questions, but I am in the mountains where we have nothing but curves which are a ball in our porsches with low profile performance tires and suspension that keeps it flat. However on the fj with stock 17 inch tires and stock suspension I am getting a good deal of body roll already and am installing Bilstein 5100's and the larger terra grapplers. I am assuming that with the larger tires and even more sidewall it will probably be no better and maybe even worse. Will more tire pressure take some of it out without wearing the middle of the tire tread out? I would be interested in anyones experience who has the same setup and what they did to minimize it. I know everything is a compromise, but just want to optomise it where I can. If I can figure out how much tire pressure I can run without adversely affecting the tire wear in the mountains, I can always readjust for long interstate drives and for offroad.