I'm running km2's 35x12.50r17 at 30lbs. I chalked mine several times and noticed I got the best even contact on all lugs at 30lbs. I re chalked tested at each rotation, 6k,12k, and 18k, and 30lbs still work great. also running stock rims and 1.5 spydertrac spacers. Had to trim the rear pinch...