Being that I lived in the tropics for so long, I only ran Sumer Ultra Performance tires. When I moved north, I did get myself an extra set of wheels and some Blizzaks to go on them. Since Blizzaks are soooo soft, I hate to run them on dry road surfaces, so I would often go pretty far into November before switching to the winter setup. This turned out to be a really bad idea, if you drive like I do. :lol: It was about 40 degrees out, perfectly dry pavement and coming up on a stoplight. It turns yellow and immediately the lady in front of me stood on the brakes. I was following at a very reasonable distance and yet, I cannot stop! If I didn't had a wide shoulder to escape onto, the Batmobile would have been wearing that lady's shitbox like a condom :lol: because when I came to a stop, our front bumpers were even with each other.
So...once you start getting temps in the 50's, give yourself lots of braking space and have a plan to change tires soon. Idk how much snow you typically get, but if it's a lot, Blizzaks are the best. If you have mostly cold, dry winters, a winter-biased all-season tire should be sufficient. It probably goes without saying, but just because your tires match the season, doesn't mean they'll perform like a summer ultra performance.