What to say it is a mirror and the genuine product from the original manufacturer...It does what it was designed to do!...If you installed properly and aimed it properly....You will be able to see what is happening behind you!
I just got my replacements, as the last set was damaged in shipping. They are on and look great, but they rattle loose almost immediately. I’ll set them with a bonding agent more than likely. Not the best fix, but I don’t see an option to tighten.