I also have 8 Hankook RS3's. All 8 have about 5.5-6/32 of tread left. They are the 140TW casting so they will be good for 2014 in all classes. In 2015 the min treadwear in the street classes (formerly stock classes) will be 200TW. Street Touring classes can still use them though.
They are AWESOME track tires too by the way :)