I have a 2005 M3 GT with stock 17" rims the problem is that they keep corroding around the center cap is anyone else going through this the dealer refinished them once but the exact same problem came right back and now they are saying the warranties up. I am meeting with the manager next week because my point is that although the warranty may be up they rims were "fixed" less than a year ago and they are still corroding. Has anyone run into this problem anyone know of any secret warranties for this. I think I might call Mazda Canada just to be a pain in the ass as well