1999-2007 Chevy Silverado GMC Sierra Pickup Manual Extending Towing Mirror Left - Driver Side

When you're dealing with mirrors, size is important. Let's say you're in a department store trying on a new pair of pants. However, the dressing room is equipped with only a handheld mirror. You probably won't be able to get a full view of those dungarees because the reflective space is so much smaller than what you're trying to look at.

Not only will towing mirrors help keep you, your cargo and people around you safe, they'll also keep you within the bounds of the law. States mandate their own towing mirror regulations, but the general rule of thumb is that the driver should be able to see the entire length of the trailer and beyond to the traffic behind it. Depending on the size of the trailer, that may require towing mirrors.