How much experience would you veteran track guys recommend having before moving up to R compounds? I've done 8 autocrosses and an HPDE so far, and will have about 15 or so autocrosses and 2 HPDE's by the end of this year. I'm running Azenis now, but they will be spent by the end of this season. I'm just trying to decide if i should go with RA-1's next year or get another set of Azenis. I will be doing probably 10-15 autocrosses and 2-3 HPDE's per year, and the tires will be mounted on Enkei ES Tarmacs, 15x7.5" front and 15x7" rear. ( not that that likely matters)