I Have a 2006 Mega Cab diesel 4x4. I have never messed with my trucks before as far as lift or leveling, just usually got a set of 305's and went on. I really like the standard Humvee Goodyear which are 37's on 16.5's as far as i can tell. What sort of lift or level could make this happen, also because of the 17's on my truck are there any problems going down to a 16.5 rim (brake calipers, rotors ect...). Thanks for any information or advice.

 

17s just barely clear the calipers, I know 16's won't fit and I doubt 16.5s will either.

To clear 37" tires on a MegaCab 4x4, you'll need a minimum of 4" of lift.

 

You will need to grind your calipers to make them fit and probably a level for no rub