The wheels on my 2007 Edge are starting to show signs of corrosion.  I have the chrome-cladded wheel options.  The corrosion is NOT on the chromed plastic, but rather on the edge of the wheel itself.  I am guessing that the part of the wheel which is corroding is aluminum.  I appears that the corrosion is underneath some sort of clear coating and has "worked its way" underneath this coating. 
  
I only have 18k miles on the vehicle and it is not even 1 year old.  While I have seen this type of corrosion on aluminum wheels before, it was not within the first year.  More like 5 - 7 years and even then, not to this extent. 
  
Has anyone else experienced this issue?  I would assume that this is covered as a warranty item?