Originally Posted by 92tsiawd

That's exactly what I was doing, swapped my winters for my stock rims, then I noticed it on both sides. Haven't had a chance to take a picture yet but I took it to the dealership yesterday for an oil change, told them about the bubbling rust, they are going to refinish that section and repaint it under warranty for me. I am pretty lucky since my car is still within the 3 years warranty, I would be pissed if I had bought and not leased the car. Coincidentally, there are two other 8's at work all 2004s and winter driven, they both have it, its not as bad as mine, there is not copper coloured rust like mine but I can feel the bubbles on their. I am guessing a couple years from now, this will be a problem for the 8