mine hasnt so far. you might wanna check those little rubber tabs that grip the stock mirror. you might be missing one of them. i know that happened on my last one and it eventually kept falling off which led me to get this new one.

 

Yeah it is definitely driver preference as to use one or not. it depends on your driving style totally. my goal is to be able to look in my rear view mirror(s) and see everything behind me without using my side mirrors so i dont even have to turn my head. Im about to buy this extra mirror which is actually sold as a mirror used to monitor a baby in the back seat to see my driver's side blind spot and have my broadway show my passenger side blind spot. I pretty much pay attention to who is on each side of me at all times and if someone is coming up on my 6 so i dont even really have to use my mirrors but its just added security.

 

I got mine mainly for the dimming feature. I have bad enough night vision as it is, I don't need trucks and other bright headlights blinding me when they are behind me.

 

do you have the blue tinted or the HID one?

 

I have the HID one