I know you all have probably been asked this over 1000 times, but I am in need of some assistance. Please tell me what size rim and tire I am able to put on my 2012 F-150 FX4 Ecoboost with 20" rims without using fender flares. I can not have the tires sticking out from the fenders to much (if at all). I am looking at the Nitto Trail Grapplers and XD Series Revolver for rims and tires. I will be purchasing Bilstein 5100 series leveling system. Thanks for any help you can provide.