My Greyhawk 31SS is 8'3" at the rear bumper. Then you have to account for the protruding awning on the slide and the patio awning. The mirrors can always be folded in by loosening with an allen wrench. Also watch for overhangs protruding from the house and wires, branches etc. I almost hit a basketball hoop when I pulled into my yard! Missed by 2"
My friend knocked the downspouts off his house with the mirrors on his Class A. Lucky no major damage.