Bill let me tell you a little secret, you don't have some special Spots Car 200 tire that looks like it came off some farm equipment.

I have seen a decent amount of them. They all look like that!

(my original spare included)
Chevrolet (GM) must have gotten a hell of a deal from Firestone, or Goodyear must have raised the price on the wide tread GT. If given the choice I can't see anyone wanting the Spots car 200 tire over the goodyear, now or then.
Luckily we have the choice right now.
Speaking of which if anyone has a nice set of widetread GT Goodyears send me a PM.
