I think you have to consider what the deflection of the caravan is on the towball in question. If it is too nose high, then surely a drop plate is required regardless of the vehicle regardless of make size or age.
As I wrote it, I was watching the morons across (they of rugby ball fame) come back from storage with their caravan (scruffy heap of a thing) attached to their BMW x3. The rear of that caravan was so low, it couldnt possibly negotiate a speed hump without dragging over it, and the nose way up in the air. That too surely cannot be legal, but what other way could you sort that out without a drop plate?
As I wrote it, I was watching the morons across (they of rugby ball fame) come back from storage with their caravan (scruffy heap of a thing) attached to their BMW x3. The rear of that caravan was so low, it couldnt possibly negotiate a speed hump without dragging over it, and the nose way up in the air. That too surely cannot be legal, but what other way could you sort that out without a drop plate?
Im neither opposing nor disbelieving either argument, just saying it doesnt allow for any sensible correction if and when it is needed.
The one I saw today had its rear end almost on the floor, not a slight deflection as the pic above.