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My lifetime experience is that there are ways to engineer better handling rigs .
There are posters that will claim a 36 footer handles as well as a 25 footer .
In stock form that is contrary to physics .
I owned a 36 foot Beaver diesel pusher .
At 12.5 feet tall it was susceptible in high wind conditions to road wander .
I am an active porsche club member with track and autocross time .
We traded down to a 21T trailer towed by a 9200 # gvw diesel pickup to get better handling .
I load the tongue weight to 987 # and my pickup weighs about 8600 # loaded while towing .
This allows us to be very mobile and my wife does not mind spelling me so I can get a nap in the middle of a long travel day .
There are plenty of macho's saying they are the best driver . Maybe they are .
But I want an RV that handles great so that my wife and kids can drive it without fear .
It can be done .
Heavy 15 % tongue weight really works ...
9200 # gvw towing 7200 # GVW handles better than 7200 # GVW towing 9200# gvw ...
There are all kinds of aftermarket handling parts available for motorhomes .
If I was to keep my motorhome I would make all of those changes until it worked .