Its just hammering the tire. It may simply need to be tighter on rear extension. But it may also need tighter front extension, an air pressure adjustment, weight bias change or all the above. All I know is what I see in that video and that is the tire is very unhappy. From previous discussions about the lack of 60ft from this car, I would say this is an ongoing issue.

If it will only work on a marginal track by punishing the tire as he alluded to above......the set up is off.

The thing about data and video, is that it is great to have, but you have to learn to use it. Guys also get caught up in a goal......lets say 60ft. BUT, don't worry about 60ft, until you go 30ft and don't worry about 30ft until you go 10ft. Fix the FIRST thing wrong. And in this case it's the way the car hits the tire. If you don't fix this, you will never fix anything else.