Take a small mirror and place it upright on a table. Walk away from the mirror. Does the view improve? Nope, it gets worse. The closer the mirrors are to you the wider the view. Mirrors on the doors work much better than mirrors on the wings.
The "factory" position on the passenger door is wrong. Need to move them back a bit. The commonly used "Sebring" mirrors are not the best choice as they are too close to the body.
Look at some of the carbon fibre and plastic mirrors sold here:
https://www.pegasusautoracing.com/advcat.asp?CategoryID=MIRRORSSome have mounts that get the mirror away from the body which allows the convex glass to really shine.
Mine are mounted to the plexi door windows -- a bit extreme, yes -- but they work wonderfully. I have no blind spots.