Alight guys need some help. I am currently running DC mud country 33s with stock 17" rims on my '05 1500 Z71 w/ front end leveled (via torsion bars/no trimming required & minor occasional rubbing during full sharp turns). I have decided to upgrade w/ a 4" Rancho lift along w/ some new trail grapplers and 18" rockstar wheels (18x9 w/ 0 offset). Question #1-What is the biggest tire I could run w/ this setup ? (I know 35s easily but wasn't for sure on 37s or not). Question #2- W/ the rim size & offset, would this setup cause my tires to stick outside the fender flares? Not going for the wide, knobby look and wanting to stay near flush to the flares. Thanks for all the post/advice! Take care & God bless.