There are areas of the road, behind the car and to the sides, which are crucial to be able to see, in order to drive safely, which are out of the driver's peripheral vision. The electric wing mirror is an exterior mirror which enables the driver to see these 'blind spots' enabling clear vision of any traffic or pedestrians nearby and any potential hazards, and as such is an important visual aid and safety feature.
An important component of a wing mirror is, of course, the wing mirror glass. Wing mirror glass comes in a variety of options, such as plain glass, convex or tinted glass. Plain glass has a flat surface which enables the wing mirror to reflect light from an object without the image being distorted, so it provides a true reflection of the distance between the car and the object being viewed. Convex glass has a curved surface and is often chosen by drivers as wing mirror glass because it broadens the driver's field of vision, but it doesn't provide a true reflection of the distance between the car and the object being viewed in the way that plain glass does, so this should be taken into account if using convex glass in wing mirrors. The electric wing mirror, is usually mounted in the door pillar on the door and is comprised of a casing which holds the electric wing mirror glass in place. Wing mirror glass is usually fixed to a backing plate or stuck to the mirror casing with strong adhesive pads or glue. The wing mirror glass electric should be clean and free from scratches, chips and cracks, to enable clear, safe vision. Wing mirrors, and therefore wing mirror glass, come in different shapes and sizes so it is important to ensure the wing mirror glass fits the wing mirror when replacing the wing mirror glass.
The electric wing mirror can be adjusted electronically to move vertically, horizontally and diagonally from inside the car by a control switch. It can be adjusted to suit the height, line of sight and seat position of the driver. Some electric wing mirrors also heat the glass on the mirror to aid visibility, stopping the mirror from icing in freezing conditions or clouding up in heavy rain. There is also an automatic dimming feature available on some electric models which reduces the glare in the wing mirror glass from cars travelling behind. The electric wing mirror can be folded in close to the car when parked, to avoid damage to both the casing and the electric wing mirror glass.
If the wing mirror glass get smashed, cracked or chipped, the electric wing mirror glass will, of course, need replacing. If it is just the glass that is damaged you will not need to replace the whole wing mirror and can replace just the glass. It is important that you consider the make and model of your car when replacing the electric wing mirror glass, to ensure the replacement is compatible with your car.