Update:My first winter I left the Corsa 4s on my HPP and never drove it when it got below 45. Then I started resenting the fact I‘ve waited since ‘79 to get a Mustang only to park it for five months out of the year.
This fall I put on Continental DWS 06 Plus 275/40/19 and yes there’s a difference between these tires and the Corsa 4s, but as Atlas1 said, the Continentals didn’t turn my Mustang into an Odyssey. I got them in 275 instead of 265 of the Pirellis, with the idea a slightly wider tire might help with handling.
I’ve driven the Continentals in below freezing and moderate rain and have been pleased. No snow yet.