I have a 2015 F350 4x4 crew cab, SRW, 6.2 gas, 4.30 gears, 8' bed, LT275/70R18 tires (rated at 3640 lb), camper package, and do not have the snow plow package. With my truck camper mounted and packed for a trip I am close to my GVWR of 11,200, and un...