The SP9000's are about the worse I've ever driven in the snow with. They slip left/right and all over the place. I tried going up one hill, only to slide backwards down it.
I've got 4 studs on now, and she's puuurfect. Just as good as my old civic was, just with better power and handling. I'm amazed that even with 14" winter studs on how well this car handles still, you know, considering the tires.
Get them Z-Rated tires off you fool! Just kidding, but really, take them off.