I have nitto Dura grapplers 275/65/20, @50k on them, great road tire, and trailer towing, rated at 3700 lbs.....still plenty of tread.......no clearence issues,no issues at all, also got a set of trail grapplers sitting in the garage, with 3k on them.......i think its time for a change though........:

 

Have not been on in a while but proud to say that I never got a ford. Sold my 04 and got a 2013 with 275 60 20 and the tires...well they are garbage. They could have done something better although i did get the 20's and some nice Metal Mulisha rims. I wanted to get 305 55 20's. Will there be any clearance issues? 1.25" possibly? Was thinking about just leveling it, or getting the 1.25" lift. Thoughts? Thanks guys!