> calibrating and everything. It was the two combined that was a mess. The
> feedback for resistance was enough to push the wheel about 5 to 10
> degrees the other direction. Which was enough to trigger the resistance
> to turning, and so push the wheel back the other direction. Letting go
> of the wheel at low speed and just touching the throttle caused the car
> to just zig-zag down the track.

This is due to the small time delay between the game signalling some force 
feedback and it actually happening on the wheel.  It's classic Pilot Induced 
Oscillation, only in this case the game software is the "pilot".  Most 
serious sims have a variable to inform the game of this time delay, the sim 
then "predicts" the FF this far ahead and feeds that to the wheel instead of 
what it thinks it should do at that exact moment.  If you look on the forums 
of serious racing sims you will see loads of threads related to the best 
settings for particular wheels.

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