Funny you post this because I wanted to run summer tires for the next month because theyre on some new wheels I just got a hold of. But I'd switch now yeah. Get it out of the way now so you don't have to freeze your fingers off when you need em!
The S7 has 19 Super sports so the 19 Conti winters are definitely going on this week.
The R has 18 PS3's which I bought for the sole purpose of being able to drive aggressive in the fall, Ps3's are not only LRR but are also the one of the best cold performing summer tires out. Unlike the PSS they do not require a warm up and are good on cold roads (Hence why they are 75 more a tire then the PSS). I still feel the 17 Blizzaks are bit aggressive when the roads are still very good.
The A4 Wagione has 17 Conti pro contact AS w/e and 16 Michelin Primacy Alpin, that has to wait for a replacement tire but that is also getting switched very soon being a DD.
Here in MI we had about 2 days of a lot of snow and cold temps but for about 2 weeks now its been around 35-50F... I put my snow tires on just before the snow out of necesity... I had wires poking out and the tread was just about falling off my old tires!
I had to swap from summer to winter wheels 3 times for my inspection (summer tires at wear bar and one has bubble and failed 2 times for dumb small things), so I'm putting off switching them again until we actually see snow in the forecast. As long as I don't get caught off guard by slushy snow, I'm not too worried since the PSS's were driveable in a foot of powder last year, but horrendous in a half inch of slush.
Got stuck in the massive blizzards in Colorado/Utah a couple weeks ago with my summer tires on and over 1000 miles from home. Scariest drive I've ever done. Throw the winters on when I got home, after I cleaned the sh*t out of my driver's seat.
I have my winter tires mounted on on winter wheels all ready to go. Was going to do it this weekend. But saw that the temps will be around 40 degrees and with my all seasons, that should be fine for a little longer.
Have to change the oil anyways in the next 400 miles, so I will be doing it all at once.