I have a '99 f150 4x4 with stock 17' wheels and 285/70/17 BFG All terrains. I'm wanting to change to a mud terrain either BFG or mickey thompson and some new wheels. I have the 2 inch torsion bar keys and a block installed. What is the biggest combo of wheels and tires i can fit (17" diamater) without having to trim anything?? I was thinking 33x12.50 and a 17x9 or 10 inch wheel with around 4.5 inches of backspacing. I was also wondering what backspacing i will need on wheels to keep them stock looking, and not sticking outside of the fenders. Thanks for your help!!

P.S. someone on here had some Coddington Timeless wheels that looked amazing...where the heck could i get those??!

 

I have 10 inch wide wheels with 4 1/2 inches of backspacing. The edge of my wheel/tire is just about even with the edge of the fender flares. However, you will have to trim a little (an inch maybe) off the lower corner of the front bumper's valance. You may want to go with one of the many 17x9 inch wheels with 5 inches of backspacing.