The myth: To get rid of blind spots, aim your rearview mirrors so the side of your car takes up your mirror
The reality: Often people have been taught to set their mirrors too narrow, so that the inside and outside mirrors overlap in scope (left in the picture below).
Our instructor explains how to get it just right: "To properly adjust your mirrors, you want to sit in the driver's seat, move your head right beside the driver's side mirror, and adjust it so you can see the side of your car. Then, when you sit back, in the mirror you should be able to see the space beside the back of the car."
The diagram below shows the correct way, on the right. That said, setting your mirrors this way or that is only effective if you pay attention when driving and constantly monitor the space around your vehicle for traffic. "Wide" mirrors do nothing if you're not looking…