VR Position reset doesn't reset orientation.

VR Setup:

HTC Vive, 3x3m play area. Desk is on the left edge at the back, facing left.

When starting rF2 the UI is to my right; pressing Ctrl-Space does nothing.

When I get in the car I'm looking out the left window. Pressing Ctrl+Space only changes my head position, not its orientation.

 

You can't reset orientation in the UI, it should be centered already.
Can you make sure you're using standing only in Steam VR room setup and not room scale?

 

Also try disabling Steam Theatre:

1. Right click on rFactor 2 in your library and select 'Properties':
2. Uncheck: "Use Desktop Game Theatre while Steam VR is active"

 

I'm using room scale because I have and play room scale games. I don't like the idea of going through room setup each time I start and finish playing.