Grand Aero’s Towing Mirrors are said to dramatically improve rearward visibility while towing. A universal fit makes them compatible with mirrors on all trucks and SUVs. Aside from a much wider field of view, they are fully adjustable and can be taken from one vehicle to another, so they never become obsolete. The company claims they do not interfere with electric mirror function. Grand Aero Towing Mirrors can be purchased at Amazon.com and Camping World.