[flybouy]

Why would you want mudflaps on a camping trailer? The tires are under the fenders/walls so damage to those surfaces are unlikely. The rear tires are so far forward of the rear bumber that anything the tires may kick up won't be very high off the pavement.

If you're thinking about DOT (rules for commercial trucks and trailers) then you're comparing apples to cannonballs. RV trailer tires, unlike large commercial trailers, don't have wide ribs between the traed or large lugs that can pick up larger stones and eject them at sharp angles.

I belive some states require dually pick up to have mudflaps because dually tires can trap larger rocks in between the two tires which can fling a large rock like a shot put up in the air. That is not a concern with a single wheel rear axle.