Driver's side window occasionally vibrates on bumps
 

This is something that just started happening in the last month or so. It started very subtle but it seems like i'm noticing it a little more now. Sometimes, but not always, when I'm going over bumps in the road, I will hear a high frequency rattling coming directly from my left ear. It sounds like it's coming from the window. It's not a loose, floppy rattle, it's more like a micro-vibration of the glass. For some reason it seems to do it more when I'm turning right and going over a bump, but I haven't done any scientific experiments yet to reproduce the rattle. I just had my 15K inspection and an oil change and the dealer said everything looks great, though I didn't bring up the rattle. I don't notice it as much when I have my music cranked up (for obvious reasons) but I don't think the speakers are producing any rattle because I can confirm that it still vibrates with the audio off, and the vibrations correspond to bumps in the road.

FYI this is a 2009 Z34 with sport package, completely stock. Just under 15K miles. Any ideas what this is? I'm not super annoyed with it yet, but it's one of those things that starts to get under your skin after a while.

Mine does it too. I'm pretty sure mine is one of the plastic "pushpins" that hold the inside panel to the door.
Have you ever had the panel off?

I haven't, no. Not sure if the previous owner did anything.

Ive got the same thing. I did everything short of removing the window regulator itself to try and eliminate the sound. I may do that one day, but I dont know. It is rather annoying though.

If your mechanically inclined at all, i would take the door panel off one day and just inspect for any loose parts.. Hey it can only help..

Mine does the same exact thing . It only vibrates when the window is all the way up . If I just push the window down button for a millisecond , just kind of punch it real fast, the vibration stops so it must be the glass vibrating when the window is in the full up position.

So there are no fixes that anyone has tried, other than slightly rolling down the window? I don't really want to spend time taking off the panel if it will just amount to finding nothing wrong and putting it back on...

ha, mine does this too. I thought it was the plastic stuff that is on the seat belt connector, which like holds the seatbelt away from your face... if that makes sense...

you could also create a new rattle this way...

I have this problem, except it's when I hit the bass instead of a bump.

I have an interesting squeak that comes whenever I go over a bump on the driver's side. I always thought it was suspension noise. Could be this too. Great.

:bowrofl: true haha,

but this happens on my passenger door not mine hmm, and its only on the highway at higher speeds.

Ditto... it's annoying. Wonder if it's the rivets holding the glass or the track? Simply banging on the inside panel will rattle the glass.

I put in a new subwoofer last weekend and I don't hear the rattle nearly as much. :)

I've heard that exact same tiny squeak before. I couldn't tell where it was coming from though.