It is a bit ironic that opnspaces hijacked his own post by including the word sway (dynamic instability) in his post. A careful reading of the opening post reveals that he is describing loss of traction on a curve.
Trailer tires are generally made of hard rubber for long life, and they tend to have a lower coefficient of friction than good car/pickup tires. That can be a good thing as you might prefer to have the trailer skid sideways a bit rather than roll over, but on old worn wet pavement traction may be a lot less than you think. The hard trailer tires will be the first to break loose, which is a lot better than the rear axle of the tow vehicle.
Reread all the comments with this in mind and you might come to a different conclusion.
