As the title says really,

 

How can i stop my door rattles and what causes it especially when closing really tinny sound!!!:glare:

Is it the window rattling around inside the door? There is a write up in the faqs about it - http://www.300zx.co.uk/forums/showthread.php?126850-Rattling-window

To start with the nylon bushes in the rail that the window rides up and down on probably need replacing (not expensive). To get more of a thud I found that some extra sound deadening on the inside door skins helped (also good for acoustics). Make sure everything is secured tightly to the door and try using a thin sheet of foam under the door card to further squeeze it all down to prevent rattles. Once you've done all that, I think that's about as 'BMW' as you'll get!

Excellent cheers guys will have them panels off tomorrow.

There is a guide on here showing where all the fastener points are if you've not done it before :)