Looking to buy some M5 wheels. the sizes are 8" x 18" front, 9.5" x 18" rear. I have a 1997 528i and was wondering what size tires would fit the rear wheels. I think M5 comes with 275/35ZR18 in the rear. Would a 245, 255, or 265 fit this wheel as well? When anyone just put 245 all around since that is the size on the front or is there an advantage to having larger tires in the rear? Could you buy the 8" x 18" for both the front and rear or would that screw things up? Thanks for any insight.