mbw
Full Access Member
I have 265/65R18 BF Goodrich A/T KOs on my 18" Compomotive wheels and I run at standard height all the time, except on the trails.
I have put about 2,000 miles on them and there is zero rubbing. I do not stow the spare tire under the truck, though I know it is possible if you deflate it almost completely.
So far they have been great on the road and amazing off road, with the exception of mud almost a foot deep, but that is to be expected. ;-) A few times I had to head over some trails that were extremely rocky and likely may have cut my old Coopers and certainly the Contis and I had no problems with the BFGs. The only terrain I have not experiened is snow/ice; however, they are blizzard rated and I know a few people who rave about them in certain snow conditions.
That's my experience, hope it helps.
I have mine stored under the back. It is nowhere near flat though. Its got at least 20 some odd psi in it. The spare TPMS sensor does not go off. (I dont even have an IID tool yet to turn that off.)