I currently have a 2004 Ford F-150 FX4, 5.4 L, all Stock. Current tire is stock 255/70R17. Its time for new tires. What is the biggest tire i can get with out changing anything? Can i get 31's or 33's or only the stock tire is possible. I want no rubbing, damage, etc... Also i am probably going with firestone, Bridgestone, or Goodyear since they are right around the corner.
search Ebay for an Autospring Leveling kit for your truck model. They have a 2" and a 2.5" inch.
You can either put it on yourself (search the forum...theres a bunch of people on here who did it themselves)...or usually any tire center can put them on...