I am not sure how a Land Cruiser comparison has any bearing whatsoever on a question regarding Land Rovers. In case you haven't noticed, the two vehicles are made by different companies, in different countries, using different suspension systems on different chassis... Incidentally, what Land Cruiser has air suspension?
I too have stated facts. LR state not to use WDH with air suspended Disco 3. I believe that because it is a FACT.
Don't worry about me towing any caravan at all, I am nowhere near old enough for that malarkey :p:p. I do tow my 8x5 tandem trailer without a WDH behind my Classic RR and it tows beautifully - I also have the trailer / hitch height set up so it is all level.

