I have an 05 F150 SCAB Lariat with 275/65/18 wheels. I was looking at the some KMC Rockstar 18 x 9. I want to use BFG 285-65-18 rubber with those.

Can I change to these wheel tire combo without the need of any modifications like a leveling kit, etc? Also, I belive the factory wheel width is 7.5" and the KMC is 9" so does this mean my wheel will be stickign out an extra 1.5"

If someone could please help me understand this, I would appreciate it. Does anyone have this current setup and if so could they send pics?

Would if be possible to run 20s and what kind of modification would this require?

 

Depends on the offset of the wheel. I went from 2357017 to the 20X9 and mine still sit flush with the fenders. For it to stay under you need a +30hpo on that wheel.
You can run that bfg and it will fit fine (only 1/2 in taller), but they only build that tire in a 10ply, which means its going to ride a lot harder.

 

They will fit depending on the wheels' backspacing. If the backspacing is 5.5 inches like your oem wheels, then yes they will only stick out 1.5 inches farther than your oem wheels.