Re: How realistic can I expect...
If you have the P Zeros, you really should not run those in freezing temps. It's not about traction, but about the construct of the rubber. They have a possibility of failing in freezing temperatures. If you have the all-season Scorpions, then you will be fine. Personally, because I live in San Diego, all of my vehicles have summer-only tires. But that will all change when I move to NC next year.
2014 SRT Grand Cherokee- stock (her toy)
2009 Nissan 370Z- not stock (track day toy)
2008 Acura TL Type S- stock (our daily)