The trailers in game that do work are happy accidents rather than true to real life usage, Though I wonder about the Krone Cargo which is a real life Trailer and has a Mod available (converted from FS17?) that will work only with Krone harvesters. It appears that in the Real World towing a trailer with a forage harvester is usually limited to the harvester header trailer they are not intended to pull heavy trailers for harvest. I was looking for information on this too.
