I have 17 inch diameter Advan VS5 rims up front and 18 inch in the rear. I am currently running Bridgestone S04 pole position tires (245/40/17 up front and 285/30/18 in the rear - UTQG 280 AA A) but the S04 pole positions are no longer available. I run those size tires because the outside diameter is very close to being similar. I can get those sizes from Michelin but they will not be the same tire (sport cup 2 connect (240) in the rear (UTQG 240 AA A) but the size I am using up front would have to be Pilot Sport 4S (UTQG 300 AA A). The rears would wear out faster than the fronts.