The chime you describe is the same one but I have no idea what's making it happen still...hmmm...

The rattle: The cover is still stored under the rear floor and seems to be snug. The tire cover is a bit loose but I can't tighten it anymore than it already is. I may have to get up to 65 70 and then just run back there to get a better listen.

: ) or let my wife drive. hmmm...