Roadside Assistance - Wheel and Tire Protection

I just traded in my trailer and bought a new trailer. In transferring different plans, one plan that did not transfer was the wheel and tire plan. It was a 3rd party product sold at camping world. So I did not take out a new plan as the way I looked at it I just lost 4/5ths of the value of that plan.

I was told that the 'real good sam' plan was transferable is that true? And is it true that it is just an extended option on the roadside assistance?

Last, the old plan covered not only the trailer, but the tow vehicle while towing. Does Good Sam cover that?

thanks