I ended up putting 275/40-20 Blizzacks DMV-1's. The lugs walk in medium/hard cornering. Dynamic mode makes the suspension pretty firm and limits body roll, that makes the car handle pretty bad. Best bet is to run grass/gravel/snow mode, that softens the suspension and allows the body to roll a bit taking pressure off the tires which in turn gives you more confidence.
Can't wait to put the P Zeros back on this spring.