I have a '19 CC Laramie with power fold away mirrors, factory trailer brake and 3.21 gears. From the edge of the window glass to the edge of the view-able mirror glass is about 13 1/2" and 15" to the outside edge of the mirror. I haven't towed with them yet. I don't know how I am going to like them because the passenger side mirror has a large convex glass with a small non adjustable convex glass. My previous '16 Laramie had tow mirrors and had normal glass and a small adjustable convex glass on both doors. I don't think the size of the mirrors on my '19 will be an issue at all. The glass may.