2wickedtoyz, thanks for your suggestion. I double checked Costco web site and they have a 215/55/16. Then I went to this site ...
http://www.miata.net/garage/tirecalc.html ... and compared 215/55/16 with the original size and they came to the same diameter. My main objective is to find a tire that give a good wet and snow performance. On top be a good dry performer and be quite. Michelin HydroEdge seem to have all that and with a $50 rebate, Costco could fit my car in about $400.
Any comments?
Fred