8 HC's.. they are done for the amateur. A pro *can* turn the laps on 20HC tires.. (I had David Murray in a SPB a few weeks back turning fast laps at VIR on 28HC tires)
I know how to keep an amateur moving on them at a good pace  with a high number of HC's
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Last edited by Brad Roberts; 07-30-2014 at 05:13 PM.
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