In most cases, it is possible to replace the glass on a side mirror. However, it is important to be aware that not all vehicles have the same type of mirror. It is also important to make sure that the replacement glass is made specifically for side mirrors. Many auto parts stores will carry replacement glass for side mirrors, but it is always best to call ahead and verify availability before making a trip.

It depends. Side mirrors are usually designed to break away so that they don't cause too much damage in the event of a collision. So if your side mirror is designed to breakaway, then you can just replace the glass. But if your side mirror is not designed to breakaway, then you will need to replace the entire mirror assembly.