tommytoyz wrote:

Indeed, from reading many posts on the stability issue, it seems that
a precise, stiff suspension is what makes the rig stable.

And this explains partly why Americans tend to think they use trucks to
tow. US cars have had a reputation for poor suspensions. Poor suspension
means poor towing stability. Imagine someone towing with a large V8 with
poor suspension. The tow will be unstable. Now try to tell that guy that
towing with a smaller car will yield more stable results! No way, his
logic will tell him he needs an even bigger car, i.e. a truck.

As my girlfriend always said: It's not the size, it's the stiffness
which matters.