Newbee question again - flat tire on the road...

IF you have road side assistance (Coachnet, GS, etc) , and all goes as planned, you call the RSA, they find a tire dealer or shop that has your tire in a reasonable distance, bring you the tire and they mount it on your existing rim. You probably have wheel liners or covers over the steel rims. They remove the shiny part, replace the tire, and put the shiny part back on. Typically you will have to pay for the tire itself but not the service call or the labor.