I was planning on using a full sized tire as a spare but have scraped that idea. I bought a used (scuffed) 21 spoke wheel to use as the spare. Have sent it out to be chromed as I think this will be the best way to recover the original investment. The firm was the one that I've had do 12 sets of T-Bird wheels so I know it will be perfect when returned. Do not yet know the price as I'd like to break even only. Let me know if interested and we can discuss.