[GH85Carrera]

I dug around online long enough to find Michelin's official recommendations for my MICHELIN PILOT SPORT PS2 tires and they say to use caution below 40 and don't use them or even move the car if it is below 20. The tires can crack if flexed when it is below 20 degrees. This is the first set of summer performance tires I have ever had. Back in the stone ages when 15 inch performance tires were available they were safe to use at low temps but sucked big time for traction. The mud and snow rated tires I used to have to run were fine at any temperature I was likely to encounter. I have driven it in zero and minus one before but only once. It was the only time I could keep the heater on max for more than a few minutes. In my 914 days it was my only car and was out in some cold weather. I can remember the plastic heater vents getting soft and pliable because of the heat coming from the heat exchangers. Especially if I drove around with the roof off and the heaters on max.