http://store.steampowered.com/sub/15544/This game supposedly doesn't support wheels or pedals, but both Fursphere and I got it working with Logitech wheels.
http://forum.arcadecontrols.com/index.php/topic,134827.msg1391424.html#msg1391424The buttons appear to be hard coded, so Logitech profiler is necessary to remap them where you like.
The hard coded controls seem to be set up perfectly for a Logitech momo, but need remapped on a G27.
IIRC, I set my wheel rotation pretty narrow (150-180) to make it play better.
Your results may vary.
Damn, I need to get a driving cab back together.

EDIT: link to thread about RRU fixed