WHEN TRAVELING OVER 40 MPH WITH REAR DOOR WINDOWS OPEN YOU WILL FEEL THE THUMP OF AIR PREASURE COMING TO YOUR EARS, THE FASTER YOU GO THE LOUDER IT GETS TO THE POINT IT HURTS YOUR EARS. AERO DYNAMICS CAUSE RAPID CHANGE IN CABBIN AIR PRESURE WITH REAR DOOR WINDOWS OPEN. EVEN WITH ONLY ONE WINDOW OPEN IT HURTS MY EARS!