just got my jlu sport s and had the dealer switch out stock tires/wheels for bfg ko2 285's on 17x7.5 MSW type 77 wheels from tire rack. The dealer set the tires to 50psi. I've searched on multiple threads and this consistently seems very high. I will do a chalk test eventually when i have some time, but in the meantime i was wondering what people in my situation have done. the car is a mall crawler for now with a little highway driving. i will eventually use it off road and have seen multiple threads about going lower for that purpose. thanks.