Welcome to Dr. Björn's Auto!
15x6 Mefro Steel Wheel. They are strong and durable.They provide a good tire choice with the right load rating and you can various profiles.
With low profile tires you have greater side stability but you need to be more careful with rough roads and potholes as tire and rim can be damaged more easily. In any case you need to have and LT (light truck) rated tire.