I would prefer a durometer rule, other wise tire must be round & black. Buddy I crewed for used to get his tires for a season for what 1 "Spec" tire cost now, so he no longer races. Got tired of rules changing every yr it seemed. Keep it up & racings gonna be as exciting as walking into a room & flip'n a switch. To me tires are killing this sport. Need one that last, 1 tire per race on RR from qualifying to feature. What's your thoughts