First post updated.
Spec tire is the Hard Solaris Spec Premount on the spoked rim.
This is now identical to WCRC Super GT with the exception of 2WD cars being permitted (the "plus").
They will run together, but be scored separately, just like the way it's done in many real 1:1 race series. Not only are you battling for class victory, but for the overall win as well!
FF cars are strongly encouraged to run FF bodies in the interest of scale realism as well as to help the drivers and spectators follow the action.