i have just purchased a set of cobra r rims 17x9 and do not know what tire size to go with is a 245-45-17 a good tire all the way round it is not a performance mustang..it is just a 2.3 so i do not need to worry bout handling to much cuz i do not have a lot of power to wory bout it. please let me know thanks alot

 

Go with the 245/45's or the 235/45's.