I haven't put my snows on yet and this Nor'easter that struck NJ yesterday put down about 4 inches in my area. I left my car in the street til my wife got home, I am the first one out so I don't like to do the car shuffle in the morning. Unplowed surface, I simply pulled up, backed in but went sideways. pulled straight out, went back in, went sideways toward the curbing along the driveway. Pulled out and did it again, and went straight in. Each time I pulled out and stopped, the car just kept sliding forward and to the side.
Keep in mind I have summer performance tires on.
So I will be swapping the tires at the next sign of snow in the forecast.