[quote=“Zong,post:17,topic:36047"”]
I see 3 STU drivers, but they’re in open class. Thats where I’m confused.
[/quote]
Oh, I didn’t even look at preregistration, I just couldn’t think of more than one or two people (off the top of my head) who have even been to two events this season. Well, one of them doesn’t even have a turbo. 
I can’t remember if they are even on Azenis or what.
obviously you cant run in Road Tire + ST, since the ST classes are already on street tires.