I just purchased a 2012 Wrangler Unlimited Sahara. Im debating on purchasing some black 18" or 20" rims. I know most people on here hate 20" rims. Im leaning toward the 20" rims because I want a clean look on the jeep with just a rugged tire. I havent ruled out staying with an 18" rim but I wanted to find out what tire size I should go with for an 18" and a 20" rim. I will not be lifting the jeep and I dont want the tires to rub but I want the biggest that will fit without rubbing. I appreciate the help.