Re: Tires hitting leaf springs.
You won't find an off the shelf wheel with less than 4.5" offset. The nature of the leaf spring suspension will lead to tires rubbing as they get larger and wider.
You could use a wider rim to square up the sidewall but that pushes the outer side further out and then you risk rubbing the fender liner or the bumper lip.
You could drill and tap the steering stops and screw a bolt in. That's what I did with my 04 to keep the 37x13.5 on 9" w/ 4.5" BS (7" lift - 3" hanger/shackle & 4" leafs) from rubbing the leafs. Problem is you take a truck with a huge turn radius and make it even bigger. A 3 point turn now becomes a 5 point turn.
2016 F-350, FX4, CCLB, 6.7PSD, 7" OUO/ICON/FOX lift, 38x13.50-18 Toyo MT