everything likes to rust. In Rams it's the rear wheel wells and for a while people with 2009+ complained about the front fenders rusting thru and bubbling in the middle that people were claiming was from a sound deadening pad that's stuck there. I dunno but I saw a ram with that problem when I was looking to buy. They seem to hold up better then Ford and GM trucks of the same age at least.

The 05-10 LX cars like to rot out in the door bottoms and the side lip of rear door and rear wheel wells.