General Rattling coming from back wheel

[elpio]

I wonder if anyone can help...
I've had my new 500 for just a week now and I realised that when someone is sitting at the back I can hear a rattling sort of sound coming from the back left wheel area. This happens only when I start it and drive off.. It sorts of tends to disappear after a while.
It doesn't happen when I'm driving alone or have a passenger next to me... Very weird!

Any clue anyone???

Many thanks!

 

[The Twins]

The exhaust exits back left and gies over the torsion beam there too. May be worth checking it isn't touching somewhere when you have additional weight in the rear. Just a thought.

 

[Scapec]

I have a somewhat identical noise. But mine comes when I'm on the highway and the rpm is at approximately 3000rpm. Try that and try to make notice of any sound. Maybe you can have a friend riding in the back?