Yup, killed my OEM tires the first two track school days, and then the SO4 on the third. But we did go for two tanks of gas per day. After that, switched to Dunlop D-Z2 tires and those were fantastic. Had great grip and lasted for ever.MH: When you had your track day school were you too a beginner in the sport of racing like the OP?
It was a very hot weekend at thunderhill. There was a lot of rubber flying around, so I think it is just heat. Strange that it is on one tire only, but since it is consistent around the tire in multiple places in the same grove, I don’t think that it is mechanical...Wow, that is cool Costco did that, as I believe Blacksheep may have had the same thought that occurred to me ---did she hit something or run over something?
Yep, I was thinking it was mechanical as well, maybe drug it around a curbing or something, but good to hear you now have a tire sponsor..lol