I think your right, Brian, by the numbers, it is very close, but visually? ... as you can see, these are the 205/60R13s that were on my Spyder when I bought it, they look wayyy to small and had my speedo racing all the way home, surprised I didn't spin the dial off the gauge.
It does seem to be fairly popular too. I never considered that the vega/astre wheel well would be much different than the Monza/etc. Learn something new. Maybe we'll have to get an order of 500 205s and 500 195s, then. lol