At highway speeds I get this really annoying rattle. Sounds like a rapid tapping on the window.

Seems like it's coming more from the top of the window.

If I roll the window down a tiny bit the rattle goes away.
This makes me think it has something to do with the whatever holds the top of the glass when the window is fully rolled up.

Anyone have a picture diy fix for this? Or know what is making the rattle?

 

When the rattle occurs, are all your windows including your sunroof closed?

 

Yes and only the driver rear window rattles

 

I thought I was the only one experiencing this rattle. I totally know what you are talking about. I'm wondering the same thing.

 

Do you guys by chance have Ventvisors on your cars? I'm getting the same noise but didn't notice until I added the visors. ???

 

I do have the AVS (POS) visors haha, I was thinking the same. However the rattle went away if I rolled the window down like 1cm. The visor still overlaps the window and there was no tapping. so I'm not sure but it's really annoying on long trips.

Another note, I don't hear it on city streets. Only highway

 

Rolling it down even a little, would give it just enough clearance to not touch anymore. And the reason for noise on Highways and not city streets could be the amount of force the air is putting on it at higher speeds.
I'm almost certain this is my problem. I was going to wait for a warm day or maybe take a heat gun to it and try to carefully "adjust" the bend in the visor. Or possible stick something between the window and the visor on a hot day while I'm at work and see if it helps.

 

I wish they made higher quality reps visors, I've seen other cars (non ISx50) with some quality stiff flush visors. I don't understand how there isn't one for us yet haha. AVS is no where near JDM visors. But I'm not down to drop $500 for strips of plastic

Anyways let me know how that goes

 

Yup, had to be the visor damn it. Do you guys now if the weather tech ones are any good? I know they are not the nicest, but the jdm ones are way to much.