Ok I just bought my cougar a few days ago but, maryland sucks and it didn't pass inspection because the rotors were worn to much. I think they might have been turned before. Anyways I just bought the rotors today and plan on putting them on tomorrow. I was wondering if there was anything I should watch out for, when replacing them. This is my first time doing this and any suggestions would be very helpful. thanks Also when I was buying the rotors from napa they told me depending on my tire size there were two different size rotors. My tires ended up being 16" so I had to spend the money for the more expensive ones. I was just curious why this was.