I have stock 255/70/17 on my 2004 fx4 screw but I am looking at going bigger but keeping factory rims for now. So what could I put on without a leveling kit and if I do level it with a 2.5 leveling kit what size can I run on my factory 17's. THanks

 

With a 2.5" leveling kit you can do 35's on factory wheels, and aftermarket wheels if the backspacing and width are close to if not exactly the same as the factory wheels. I'd go 2.5" AS with an AAL and 35's, but I'm partial to that set-up.... no leveling kit I think you can go up like one or two tire sizes. I got pic's in my gallery of leveling kit and 35's

https://www.f150online.com/forums/me...kit-tires.html

 

If you don't add a leveling kit, you can still easily fit a 285/70-17 (33x11.50) or a 305/65-17 (33x12.50) tire using your oem wheel.

 

when i was stock i ran a 285/70/17 bfg at, now with my 2.5 leveling kit i have a 305/70/17 nitto tg

 

do you have any rubbing with your 305/70/17

 

no they do not rub

 

ok sweet how do you like you nitto tires, far as ride and road noise

 

ride is great and the noise is good i cant hear them, they have been a really good tire so far

 

Nitto TG are excellent tires.