I am trying to build out parameters for a truck and trailer I will need to transport my tractor. I can get specific weights on tractors and equipment. I am trying to determine how much 'wiggle room' I need to build in to my calculations. So if I get a medium-sized CUT with ROPs, that is about 3300 lbs. 16 ft trailer with about 7000 lb capacity is 2500-3000 lbs. Cab is a maybe right now. FEL is a definite yes, so I will have to add in weight for that. Also likely to have med-hvy duty RC on 3pt. What other factors do I need to consider? Like, how heavy would loaded tires be? At this point, I don't know what I don't know. I don't want to buy too small a truck, but I also have no interest in a behemoth.