Revvdmedia
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Not sure. When my roof is open, I can bang my fist on it from the top and no rattles or noises. When it is closed fully, there is some metallic rattling from the front (on occasion or not at all depending on the position of the metal bar). The obvious culprit would be the spring-mounted pop-up wind screen that folds and gets squished in there when the roof is closed. Is it not touching other metal, particularly when the car is jolted over a bump? I know of no way of testing that theory without removing the pop-up screen. Is there any soft material that can be put on it that won't jam or cause a problem? But a spring-mounted item like that is bound to be a problem unless the only thing it touches when compressed is soft/rubber.
The spring loaded pop up screen does touch a hard material, and it could make noises over bumps. If you have slender enough fingers, this can be replicated by putting the sunroof into the tilt position, putting your fingers in the open area in the front on the far left or far right and pushing down on the screen's top and releasing. It will bang against the (metal?) part of the sunroof that presses down on the screen. I've tried pressing down with force on the screen with the sunroof tilted and I still get noise, so it may not be this, for me at least.
We're getting a bit in depth about the sunroof in the door ticking thread, we might be best to keep the sunroof talk in the sunroof thread to keep these topics more relevant to their particular issues?