I was at Pocono North course on Labor Day with EMRA and I took a look last night at my Miata for the first time since having it up there. I noticed this on the driver's side front tire and I was wondering what it is. The course is a clockwise oriented course, so most of the turning was to the right - this tire took a beating.
Is it just excess rubber that I picked up that was sitting on the track? Did I overheat my tire and turn the wheel while sitting still? I'm just curious.
Edited because I'm stoopid.


