My 14' wide doors sound like a lot....but the RV is 8'6" wide, plus about 14 inches iirc each side for mirrors. Right at 11'....leaves 3' total thru the door, or 18" each side.
Typical trailer is 8' wide. 10' door leaves right at a foot on each side. A little less maybe, depending on tracks, etc. Have to go straight in and out. Too cheap and easy go with wider doors.
