I just noticed with my 07ES recently that when either rear windows are rolled down they vibrate a lot. It's almost like sitting in an old airplane and air is vibrating. It's really uncomfortable since anyone sitting in the car feels like their ears are being plugged. As soon as I open up more windows it decreases significantly. Anyone else seem to have this problem?

 

This is perfectly normal, specially in SUV's. What you are experiencing is a verry low frequency sound created by air entering through one opening and being trapped inside the car with nowere to escape, therefore creating the loud bass sound. This is easilly solved by cracking one or more windows open to relieve the air pressure inside. From what you explainned this seems to be what's happening, although it shouldn't be a rattle, but more like a sub cranked up. But its got nothing to do with the build quality of the car, and more with shape of the interior.

 

Yep that's exactly what it seems like. I'm not getting any rattling, I just noticed the windows seemed to vibrate with the air. Only other time I've had this happen was when I owned a civic and it only happened on rare instances. I'll keep in mind to open more window at a time. Thanks for the info.

 

This happens with every 4 door car Ive heard of, lol

 

This used to happen in my car anytime I had just the sunroof open. It was solved by adding a wind deflector though.