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Originally Posted by Billhyco
never autocrossed on r-compounds. hell i have only autocrossed one time in my life. to me, there just isn't enough time to get a true R-compound tire up to operating temps in a 60 second lap, at autox speeds. If you could go heat up your tires then jump on course, sure that would make it much better.
On the skid pad I literally did figure 8's for about 7-10 minutes trying to get heat into them. After that like I mentioned, I put the car on stands and left it over night. I know guys that mount up R-compounds, drive the car down the hwy and back for about 15 miles and then put it in the air. They claim that works, I have no idea.
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quite a few locals that run the tires start spraying the tires with water after about the 3rd run, sayin they overheat and start losing grip if its really hot out. Of course thats with A6's, havent talked to any of the national level guys about it as i'm pretty sure they all use A6's. Of course I guess the amount of temperature you get into them depends on how hard youre driving them & the severity of the slip angles youre creating.