how wide is the 17" wheel. It makes a difference. A 17X9 is probably fine while a 17X8 will cut it close. A 17X9 w/5 bs is the same as a 17X8.5 w/4.75 or 17X8 w/4.5 bs. The reason why is the 12.5 width of the tire overlaps the smaller width wheel more which in turns adds to the backspace of the overall tire.