Apply side ways and forward friction

Hey guys this has been an issue for days I can't seem to figure it out, well all I want to do is apply friction force to the wheels of my car, I don't make use of the wheel collider system I built mine using raycast

This is my friction code

Code (CSharp):

1. Var dragx = Mathf.Pow( Rb.Velocity.x,2) * drag;
2.  
3. Var dragvecx = dragx * -velocity.normalized;
4.  
5. Rb.AddForceAtPosition(dragvecx,transform.position);
6.  

Any idea how to get that infinite grip