Actually i was looking into getting the 17' 5Zigens and after talking with a bunch of TT.Neter's i was told 17's won't fit the Z, 18's only. I think it was the offset nad also the width. I actually had ordered a set of 17's and after talking with everyone canceled the order the next day. There is a guy on here selling a set of 18's for a good price (check the classifieds). I'm trying to get them but it's been slow going.