Other than the wheels changing from the 18" to 19" (and slight style change), what other changes were there in the S55 in 2006 model year vs 2005? Cosmetic, electrical, engine, etc.. Anyone know??

As far as I know the wheels were it...I think since the 2007 was a dramatic change, they kept the 2006 car the same. I have a 2005 but with I had those 2006 wheels, they are very rare and expensive.
Mike