i have a 99 contour se zetec. im not sure if i have a 8 inch or 9 inch brake shoes for my tour. i heard it might have to do depending what size rim i got on my car. i have a 15 inch rim. im planning on getting the parts and have a shop to do it. thanks

There doesn't seem to be any rhyme or reason for one or the other. You need to pull a drum and measure it.

i will thanks. just curious why are they diffrent size?