I did have a good lol this afternoon. The spare tire cover, though in good shape, had come loose and the draw string was broken so I took the cover off and tossed it in the back. I decided to check the date code on the spare, 19th week of 1990. So yeah, I don't think its the original tire but its probably from the 2nd set.

1989 Dodge Raider V6
2001 Jeep Wrangler 4.0L
2008 Toyota 4-Runner SR5 4wd