Trailor tires with their stiffer sidewalls do handle really tight turns better. As in turns tight enough for some of the tires to be skidding sideways. Such as almost having the heavily loaded trailor jackknifed. If your on pavement its a bad idea, but you will probably get away with it. If your on soft ground where the tires dig in, then your likely to break lug bolts or roll a tire off the rim.
Yep, such turns are a bad idea. However every once in a while such things have to be dealt with if your using trailors a lot and getting in or out of tough locations.
Trailor tires with a stiffer sidewall are supposed to handle the heavier loads better. Less flexing on the sidewall and heat building up. Thus the cheaper prices since the materials do not have to handle the conditions or provide the ride a truck tire does. Personal experience for me is that GOOD tires of which ever type are required.
Even for light loads and occasional use I would have a hard time being convinced passenger tires are a great idea. Will they work ? Sure, but why deal with the hassles of when they will not.