I have a 2011 Ford F-250 and im getting a 6.5 inch lift by ReadyLift. I really want to put 38x15.5R20 tires on my truck but im hearing mixed information. I need to know if this is possible if not what could i do to make it possible. Or let me know if i have to put 38x13.50R20 or even if if i have to put 37s. But the site said i could but 38s.