Last year Bloomington did check right rear tire compounds with a durometer on several occasions. This was done pre and post heat cycle's. After checking a couple hundred tire's at different stage's of the race program they all "appeared" to be in compliance. I am for an open tire rule. I chose not to return to Bloomington as an inspector this year. I would have a hard time as a racer not to let a racer compete due to an A/R on the front.