Quote:
Originally Posted by Lynxis
My experience is that the 660s can take a bit more heat than other tires in it's class. I'm primarily HPDE/lapping and just do autocross when something local is going on but at the very least, they hold up to lapping in comfortably warm weather (28c/82f) without significant fall off.
My impression in autocross on hot days (33c/91f) is that I can feel more grip in later runs as I get more heat into the tires, although perhaps my experience should be taken with a grain of salt given that I was the second slowest twin out of about a dozen at regionals this year, the only slower car was a complete novice while I've done track and autocross casually for the last ~6 or 7 years.
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i'll say i had a similar experience at mid-ohio. they had good consistent grip throughout a lapping session, my confidence in them only dropped after ambient temps got to 85+ and a lot of rubber went down from NASA racing in the afternoon of a sunny day.