I have the Z rated Pirellis on my 2007 V8 AWD S80 right now for the summer, but want to switch to a good tire for Minnesota weather when it gets cold, snowy, and icy. What do you guys recommend? Should I invest in strictly snow tires or go with an All Season? If snow tires are the way to go, when should I put them on? I live in the Twin Cities Metro area. I really don't like the Pirellis as they are very loud on our roads here. I wouldn't mind getting rid of the Pirellis all together if there is a really good year round tire out there that works great for my car.