These Firehawk Indy 500 things do take quite a bit of abuse. Here they are after 2 full 2-hour lapping evenings. I'm showing the front left tire since it takes the most punishment at Calabogie. There's one picture of the front right (3rd pic of 4) as reference.
The tires sacrifice a bit of ultimate grip to the Michelins I was intending to purchase but even at $150 less than the Michelins per tire, it looks like they might last twice as long as the massive shoulders resist chunking. I like the math.