mlts22 wrote:
You are right about the axles. Narrow axles are great for Euro-style vans because they help get around narrow, twisty European roads. With a 100 inch wide-body RV, you want as wide an axle as you can get within reason for maximum stability. I think because RVs are such an odd bird compared to other uses, what prevailed was engineering for fleets and their needs (relatively agile in metro areas, fuel-thrifty vehicles.)
Well stated!!
I've been trying to make the wide-wheel-base point for Class C motorhomes for years in these forums. That's what the Ford chassis (and Chevy chassis?) provides under Class C coaches ... ESPECIALLY the E450, which even has it's duals 4.5 inches wider in the rear than the E350's duals.
It's not only that the wider wheelbase provides for more spacious non-slide and slide floorplans, the wider wheelbase also provides for more lateral stability versus whatever height the RV is built up to. This means that higher interior ceilings can be offered while not sacrificing as much stability in highway cross-winds and with passing trucks.
You couldn't give me one of those narrow and tall Sprinter-type Class C motorhomes - scary to look at and more tricky to control in high cross-winds. Our little 24 foot E450 Class C is rock solid on the open road and on tilted/rough unpaved roads.