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In the interest of full disclosure, the summer tires in the video are not PS4S. I think they are a Continental 200 tread wear track/street tire, so probably worse off in freezing than the PS4S. BUT They still performed better than the winter tire on cold pavement. Snow was a very different...

That is very interesting about the track session. Thanks for sharing it.

It does not mean he floored it. He exceeded the grip that the tires had. On my Pirelli Trofeo RS tires in 40 degree weather, it does not take much to get them to slide. I have not had this experience with PS4S in the winter, but I had them on an AWD German sedan, not a Mustang.

Just curious, did they ever get hot at the track or was the asphalt temperature and ambient temperature too much to overcome in a half hour session or subsequent sessions? Does anybody know: Is there some specific tire formula that professional racing teams use if there is a cold snap during a...

Tire Rack comments say they do well at 40° Fahrenheit (7 Celsius) and that they are an improvement over the PS4S. They are 340 tread wear, so probably will last a little longer. Tire Rack shows them available only in 17 and 18 inch sizes, though. Michelin's web site shows 19, 20, and 21"...

Does ethanol help the engine cylinder head temp or oil temp? Or real coolant temp if anybody is measuring?

Rhetorical question. :like: Just for trivia, the all time low in PA is -42°

Yes, that is why I put the shocked face emoticon. Even worn mine still grip well at 60 degrees. Down at 40, however, I have a hard time turning and accelerating at the same time. I have to drive very, very carefully. Are you like baby baby babying it?

I found them to be way too slippery below 50 degrees. Even in California . . .

I could not find one where he compares an all season. I am guessing it would do better than the winter tire, but that is just a guess. Would it do better than the summer tire? The same YouTuber has a test with all 3 tires, but it is useless, because he tests only in the warm dry and wet (duh...

Dark Horse, 135 mph, no hood flutter that I noticed.

Neat. Reminiscent of a Mach 1.

Yes, but now we can drive everybody crazy on the forum by insisting upon it. :crackup:

Then he goes back down in elevation to the same road as before does the same braking test with the winter tires on dry, cold asphalt. It is two degrees warmer at 26° Fahrenheit (-3.3° C). Panic stop, ABS activated. Let's see how much better they perform.

In the following video, a man uses his extreme summer tires in 24 degree Fahrenheit weather (-4.4° C) and does some panic braking tests. Wow, it takes a long time to stop, way longer than it takes in the summer with these same summer tires. It is true. Summer tires are hard like hockey pucks...

You are in Georgia, like me. Do you run the PS4S all year around or swap to winter or all season tires this time of year?

Are you still driving with the PS4S now that it is December, or did you switch to winter or all weather tires?

The Michelin Pilot Sport 4S have the following warning at TireRack: Note: Tires exposed to temperatures of 20 degrees F (-7 degrees C) or lower must be permitted to gradually return to temperatures of at least 40 degrees F (5 degrees C) for at least 24 hours before they are flexed in any...

Oh, okay. That makes perfect sense, an oil cooler, which is a radiator. Thanks for the follow up.

Thank you. Sorry to be so persistent, but the detailed answers are more useful. I appreciate your patience in answering.