Because I tried to help a fellow Zer when I had the same exact wheels on my car and almost had to go through the same exact thing then told I was wrong when I did try to help. I researched these wheels for two months before buying. I would have loved someone to just come out and tell me this is what you need to get to fit them on the Z. So you wanted me to be wrong for what reason? Other then the fact that I tried to help him?