Read a bunch from other members of the f150 forum on this topic. Thanks to all that came before me and posted pics. Hopefully this will help the next guy that’s trying to decide what size tires to get.

My dealer use a Rough Country level lift kit. It has a suspension shock on each side of the back to help level heavy payloads or heavy tounge weights. Its my second build like this and I like them. First one was on a 15 f150 screw 2.7 eco 5.5 box. Had 33/12.50 17’s on it with no problems. Dealer said I Couldn’t quite squeeze the 35 x 12.50’s in this time without some trimming and mods or I would have.

I drove the truck 30 miles completely stock on a 65 mph hilly hwy. I averaged 18.9 on the first run.

I have driven the truck about 10 miles home from the tire shop and got 15.7 into a blistering head wind.

I will add more info as I drive more. Its not as aggressive as my kids want, but its just fine for ole pops!

6.5 bed
Max tow pack
tow mirrors
payload capacity 2250 lbs
factory bed liner
3.5 eco
4x4
20” factory wheels
fx4, 302a and xlt chrome package.
Heated, power, cloth front seats! My bride loves her buns warm.

Before. Factory 275 55 20 dyna pro 4 ply

Before