Been reading alot about being under the 1% variance for diameter difference for a awd coupe xs, just a quick question, just wondering if the width of the wheel means anything Ie. as long as i have a 285/30/20 tire on rear doesnt matter if the wheel is 10" or 10.5" is this correct? and offset doesn't matter ethir

 

you are correct its rolling diameter

but in terms of fitment width and offset matters

 

Ok so a 20x 10 fitment would work with 285/30/20 and 20x fronts 245/35/20