Rear Seat Window Noise

I DO LOVE MY MURANO, I GET 22 MPG WITH MY AGGRESSIVE DRIVING, BUT ONE THING I CANT SEEM TO UNDERSTAND IS, WHEN I LOWER ANYONE OF THE REAR SEAT WINDOWS , OR BOTH ,MY EARS FEEL AS THERE IS PRESSURE ON THEM, AND THERE IS ALOT OF NOISE, AS IF BOTH REAR TIRES ARE WAY OUT OF BALANCE, I VE HAD THEM CHECKED AND THEY ARE GOOD, THEY WEAR GOOD, BUT THE NOSIE FROM DRIVING WITH THE WINDOWS DOWN, IS SO BAD, I CANT DRIVE. MY WIFE HAS A NEW XTERRA, AND HERS IS THE SAME WAY, WHEN BOTH WINDOWS ARE DOWN ,SHE HAS THE SAME LOUD NOSIE, DOES THIS HAPPEN WITH ANYONE ELSE?:screwy:

I have a 2004 Murano and I get the same thing if I don't open the front windows as well. I love the SUV but that is crazy and never had it happen with any other vehicle before.