Well, I found out THIS 8” was too deep. I agree with what btadlock said, “it really depends on the type of snow”. The bottom 2” was very wet from freezing rain/sleet. The top 4-6 was pretty dry.
I gave it a try, and found I could maintain forward motion, but control was just about impossible even with the Nokian Extremes.
Damn, my last commute home for the year and it was the 1st time I had to abort all year due to weather.