Yes blind spot mirrors are very useful to add to your vehicles mirrors.
With your regular mirrors it can be hard to see the blind spot and make it hard to safely change lanes.
When you add the blind spot mirrors to your vehicles mirrors you can more easily see what's in your blind spot making it safer and easier to change lanes.
I highly recommend adding blind spot mirrors to your mirrors on your vehicle as they are really useful.
The blind spot mirrors on my vehicles help me see things behind me much better and has saved me from car accidents.
The blind spot mirrors are cheap and easy to install on your vehicles mirrors.
You don't have to have blind spot mirrors on your vehicle but they are very useful and helps you as the driver see parts of the road that are hidden from your vision.
The blind spot mirrors essentially lets you keep track of the car lurking behind you, and you can also change lanes without compromising your safety.