Theoretical heights.
I was looking up the legal DOT heights (13.5ft) as well as the minimum recommended clearance between truck and bottom of the 5th wheel overhang (6in) then crossed it with the most recent height measur...
Forum Discussion
My '17 F350 DRW 4x4, CC w/ 8' box and '18 Big Country comes in at 13'4" last time I measured it. The national bridge height is 13'6" not 13'5". BUT there is a built in add'l foot on MOST bridge clearance heights. We still have 6" of clearance from top of box to underside of 5er. One thing you have to take into consideration (unless you have airbags) is that the rear of the truck will squat down w/ 5er on so this brings down the top front height of your 5er. RV transporters don't have problems and they have all kinds of truck configurations. Just sayin'.
