never had a problem with the spoiler rattling. my problem with the rims came from my driving philly area ,NYC streets and potholes. No matter what I did trying to avoid them, the wheels always seemed to find a dip. After I replaced three rims, I found there was a class action lawsuit against saab and the rims, but I never got anywhere with them. Funny thing was that in the 2003 brochures from Saab, they wrote that 17" rims, and the z rated tires are not designed for use in areas like the northeast US. The suggestion was that it would be better in areas like florida, arizona, etc where the roads aren't fouled up like there are in the northeast.