I have had this on as many cars as I can remember. I have always found that opening another window slightly does the trick. I gues it is because it lets the incoming air back out rather than it buffet in the car.I've had that on several cars. The way to get over it is to open the rear window driver's side, and slightly open the front passenger window.
think that's it exactlyGood question Maybe modern cars are so well sealed and if you are forcing air in it has nowhere to go
Wind buffeting, the noise and pulsating forces that are experienced when driving a car with the side windows open, has become a significant factor in the overall passenger experience in recent years. It is caused by an unstable shear layer that is established at the upstream edge of the window opening. Disturbances are shed from this location and travel along the side of the vehicle.
When they reach the rear edge of the window opening, a pressure wave is generated that propagates both inside and outside the passenger compartment. Outside the vehicle, this wave propagates both forward and backward along the side of the car. When the forward traveling wave reaches the front edge of the opening, it triggers another disturbance that moves back to the rear edge. This process is repeated many times every second and causes the shear layer to develop a characteristic buffeting frequency, which depends on the speed of the automobile and the geometry of the opening. Often the frequency is below the range that can be heard by human ears but it still can be felt by passengers as a pulsating wind force.
Wind buffeting can be detected using microphones, but the complicated pressure waves that are its cause are very difficult to measure. As a result, engineers in the past have had to wait until relatively late in the design process when prototypes become available to measure this phenomenon.
These measurements typically give them little or no information about what areas of the design are affecting wind buffeting and what could be done to reduce it. The only option is to modify and test the prototypes to see whether individual changes have any effect.
This process is so costly and time-consuming that it is difficult to identify changes that will improve the design.