Eibach pro truck lift, Ironman UCA's and Firestone Destination X/T 285/70/17 tires

With 285's, you could potentially rub the mud flap or body mount in this situation because your lift height will not allow you to move your caster very far forward. I say could because you could also get away with not rubbing too. OR wheels will give you the best chance at not rubbing with 285's.

If you do rub, the solution is to

1)bend or modify a section of the mudflap with a heat gun.
2) Remove mudflaps.
3)Get a Body Mount chop (if that's where you're rubbing).

-Or-

4) get UCA's so you can push your caster forward and get that tire away from the mudflap and body mount. In this last scenario, you might need to push the fender liner in front of your wheel forward slightly and trim a small corner of your fender flare with a box knife. It sounds worse than it is and is actually very easy.