Just installed a Rough Country 2.5" leveling kit on my 2010 Ram 1500 Sport. I want to put a 20x9 rim with a 35x12.50 tire. I have read on here that this works but just need to know the correct offset and backspacing I need so it doesnt rub too bad, or at all would be better. Also how do you guys feel about black on blue? Or machined? Let me know thanks.