Originally Posted by Katana950
Yes I regularly autocross. I race in the SM class where R-compounds are a necessity. As regards the heat cycling comment. You can accomplish heat cycling by driving on the street for a few miles and letting the tires cool down.
Yes you can heat cycle tires by driving them on the street ONCE. But you plan on driving on the street with your R compounds all the time which HEAT CYCLES them TOO MUCH and makes the rubber rock hard in a week or so.
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