From Dave's towing tips
(This guideline was first used by the RV Consumers Group rv.org
For the first 110" of wheelbase, this allows you 20' of trailer.
For each additional 4" of wheelbase, this gets you 1' more of trailer.
Wheelbase / Trailer length
110" = 20'
114" = 21'
118" = 22'
and so on
IMO that is a subjective value. The type and quality of hitch is a huge variable.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"