Problem with wheel collider

Hello all.
I get value from "groundHitR.sidewaysSlip" and have indentified that when this value < 1 the car slowly skids, its good, but when this value = or > 1, the car very fast turn around and stops.
I need to turn off this, beacuse when car start turn around, it's not can turn in other direction or continue move, and no settings of wheel collider does nothing for setup this.

I tried this:

Code (CSharp):

1. if (driftAngle < 0.9f){ // driftAngle= groundHitR.sidewaysSlip from rear wheel
2.   WHFriction.extremumValue = 0.4f; // I tried all values, slip, stiffness e.t.c, it's does no metter because all this values just power of slip;
3. }else{
4.   WHFriction.extremumValue = 3f; //if this value will be 2 or 1, it's not working, because need full exclude the car turn around
5. }

It works, but very very bad, beacuse the car moves like jumping when angle of car more about 30 degrees and of course fast turn back in other direction, also this is small angle for real powerfull driftcar, if I increase driftangle in condition, the car will be turn around again.
if I setup all parameters of car with wheels for move like on ice, all works maybe more fine but not realistic and car no have handling. How I can turn off this and allow to car moves like real drift car with big angle? Of course I can write myself when the car must lose control.

 

Have you tried watching this video?