Hi warren032,
Welcome to the Heartland Owners Forum and to the family. We have a great bunch of folks here with lots of information and all willing to share their knowledge when needed.
I would think you could go to any tire dealer and they could help you with spare. Now if you want a rim same as on unit, then call
Tredit Tire (800) 537-2925
Be sure and check out our
Heartland Owners Club. Join us at a rally when you can and meet lots of the great folks here and make friends for a lifetime.
Enjoy the forum and your new to you unit.
Jim M
Thread moved to better area.