THIS is what I think of Sumitomo tires...

ResIpsa

It is pretty clear you ran those tires red hot. I have to believe that you couldn't tell that you were over driving them, if not only by the feel, but by the smell.

I am in no way saying that those tires are track worthy but you have some fault. What were your hot tire pressures immediately after pulling into the paddock? What were your cold tire pressures before going on track?

Kids...If you are driving street tires on a track and they start howling and losing grip you probably need to back it off a little. If you pull into the paddock and your tire is at 49 psi hot you may want to bleed some air out of it (10 to 15 psi to be exact).

Although I did not follow this rule in my wife's civic earlier this year. I had mounted dedicated snow tires on it but just could not help my self driving on some switchbacks in the Blue Ridge Mountains. I killed those perfectly good tires...

__________________
The Reed Law Firm; Michael Fasano VA Attorney and Counselor at Law: A Virginia Traffic, Criminal, and Family Lawyer.https://reedlawva.com/