He's not paying for his tires.
made me wonder? How can you tell if a tire like that is wearing thin or correctly?
...please excuse me... (I don't know anything about racing tires (tyres))
Just occurred to me... the answer may be in your comment, meaning, they throw $ at it, replacing them so frequently it is a non issue.
I still wouldn't mind an informed answer. (better than me guessing or GTS'ing it)
John, ...fun photo, thanks. I don't know the physics either. ...even more complicated than a slick tire.