Ok performance diesel guys, im wanting to get some Nitto 420S for my 96 2500. I have a set of 20x12 Fuel Octanes that currently have Mickey Thompson ATZ 305/55/20 on them. These tires are terrible and ride horrible. I want better ride and more grip. The tires on there now rub a little when turning. The truck is a 2wd with a leveling kit. Will the 305/50/20 Nitto's fit on my rim and will they rub. I know some guys are running them and id like some input. Thanks.