NTMv5, huge, tread rubber compounds and how they behave, at least on a few cars next season:
Quote from DaveK : Sterling, (and everyone else reading)
I am still working hard on the tire model, for sure. We decided after we put out the first couple iterations of it that everyone would be better off if we didn't put out a lot of little updates, but waited until we had big improvements to roll out. That way, you're not having to redo setups as much. And I typically have my head down, figuring stuff out, coding things up, and I don't really get into the forums too often. That makes it seem like I'm off on holiday, but believe me, I'd rather be figuring out how tires work than wasting time on some silly vacation. Just ask my kids about my beach-side reading material.
The latest iteration of the tire model (which is not out yet), represents a huge amount of work on the tread rubber compounds and how they behave. I think you will like it--we hope to have at least a few cars with this new tread model next season.