Those dial labels in full, from top centre clockwise:
HS (or IIS?)
FAIL (useful on first laps?)
12 buttons, 9 dials.
It's HS. I'm also quite confident it's INSRT, and probably either SCAR or SCAF.
How does this center dial work? Does it alter the display readout, and the values are then adjusted with the orange +- buttons?
I wonder if they could put up to 8 buttons on the reverse of the steering wheel that would fall right under each finger. That would be pretty instinctive once memorized, not to mention not needing to look down at what you're doing. Maybe there's no room what with the paddles though.