2011 Kia Optima SX Turbo: Quiet Ride Technology
November 08, 2011
I remember when wind vanes like this first started popping up on BMWs not too long ago. The engineers claimed that the small bumps smoothed the airflow around the mirror housing which helped to keep wind noise down. We took their word on it since the Edmunds wind tunnel was down for maintenance at the time.
Since then, this feature has been added to countless new cars and sure enough those cars have little to no wind noise coming off their side mirrors. In the Optima, it's just one of many small things that make this a very comfortable cruiser. Tire noise is still a little bit more prominent that it should be, but even that is barely loud enough to be annoying. Combined with the fact that it can drop a gear and pass just about anything in a matter of seconds, the Optima is very enjoyable on the highway.
Ed Hellwig, Editor, Edmunds.com