No. A thousand times no. I did this, on the advice of “Click” and “Clack” the CarTalk brothers. Shortly after, I backed into a short concrete pillar and messed up my left rear fender. The pillar was too short to see out of the back window, but I would have seen it if my side mirrors were set correctly as they reach you in school. You have to see where your fenders are going. Imagine if it was a small child back there instead of a pillar.
Yeah I also worry this advice would make it harder to back up. I drive a large minivan and use my side view mirrors all the time to check if I’m going to hit something when backing up. That would be a lot harder if I were not able to see my own car in the mirror.
Although I guess all you would need to do to see your own car in the mirror would be to lean to the side a bit... so maybe not a big deal.
