Ok guys - looking for opinions - i am in process of getting new rims and tires - im getting fr500 Anth. - my question is do i go with 17 or 18 inch rims - in researching i have seen that the 17x10.5 for is not recommended for a 99+ cobra with IRS - where 18's dont show any problems - i am looking for a little wider to fill out fender well more hence reason i was looking at 17 so i can go with 315's - where the 18's recommend 285's --- any thoughts on this subject welcome - want feedback prior to dropping $ on it