My 2012 Challenger R/T is always put away during the Michigan winters. Never driven in the snow. My under body and frame rails are still mint and rust free. However, the driver side quarter before the rear tire is starting to bubble the paint and show signs of rust. Bums me out everytime I see it knowing that I have taken excellent care of it, but yet still is starting to show rust. I understand it is now a 10 year old vehicle. These vehicles must hold water, dirt or debris in these areas?
It's because Chrysler sprays expanding foam into the rockers & quarter areas like where yours is rusted - to reduce road noise. Even rustproofing cannot get around the foam. The spray-in foam is a TERRIBLE idea - major moisture trap.
