what run group do you run in? unless you are long time advanced and like to buy new tire every couple weekends, stay away from the RR's or Rc-1. those are 40tw race tires that last about 10 heat cycles. you are also not running enough front camber for those tires.
look for a 200tw tire for HPDE.
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Marshall
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95 M3
97 M3
25 M2
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