I have a 2003 f150 4wd sitting on 33x12.5x17 super swamper ssr radials. it has no lift of leveling kit and there is zero amount of rub even in full turn, the only thing i did to achieve this was grinding the fender wells a little bit. My question is based on what i already have does anyone know if i could tuck in 37s with the rough country 5 inch suspension lift? it says it allows for 35s, but they also say you need 3 inches for 33s which isnt true

 

If you want 37's, I'd go with a 6 inch Fabtech lift. I have seen 37x12.50's fit by combining a 6 inch Fabtech and the OEM wheels. A lot depends on what wheel you use.

 

Dont forget about gears when moving to 37's. Depending on how deep your pockets are you may want to consider lift and 35's to avoid re-gearing. If you want to go the full route to 37's please do and post pics.