I already have the BFG ATs in 305/65/18 and the wheel I am looking at is

18x8.5 with +25 offset and/or 5.75 back spacing

or

18x9 with +12 and/or 5.39 backspacing

How much further will these wheel/tire combo stick out compared to the stock
set-up of 18x7.5 with +52 offset.

I want to be wider but with out having to put wider fenderflares on or kicking stones/mud all over the side of the truck.

The truck is 2006 FX4 with 2.5 Level kit.

Thanks for the help.

 

The 8.5" wheels would stick out 3/4" more than stock, the 9" wheels a little more than 1 1/2" than stock. That's with the backspacing on those wheels.