My question is how to set the steer center reduction and the steer control rate. What is the best solution for this ? Who have a good mouse drift setup for XRT ???

With keyboard I can drift well but I like to learn drift with mouse.

I have
0.80 Center reduction
10.00 Control rate
Personaly cus i like having " fake " FFB, slow in the middle.
I can adjust the sens on my mouse tho to get the perfect speed for that.
So you might have to adjust the speed of your mouse.

It takes a few hours to get used to it, ive driven like that since the start of S2.
Both for Racing/Drift.

Even sold my G27 cus i couldn't adjust to it after years with mouse.

You sold your G27 ? OMG I need to practice for mouse drifting I cant adjust the mouse speed or inside the windows ? I use Win7