For my third car in a row (2007 Nissan Altima, 2011 Mazda6, 2011 Infiniti G37), I get awful wind buffeting if I open the rear windows a few inches at any speed greater than 40 MPH.
But if I open the front windows the same amount, and at the same speed, there is almost no buffeting, ever.
What gives? Why does this phenomenon occur with the rear windows, but not the front windows?