Talk:Porsche 936/77 Spyder Championship/@comment-32545704-20180821214418/@comment-28169398-20180822160126

I don't know about Tires and Wheels specifically, but a Tier 1 Gold upgrade has happened before.

PORSCHE 911 CARRERA 2 SPEEDSTER (1993), PORSCHE 911 CARRERA RS 3.8 (1995) have a Body 1 Gold Upgrade. There may be others.

However this one is much more expensive than those.