An updated F1 tyre with the new CPM is really really needed. Many modding people cannot go on, as it changes completely even how downforce affects the tyre forces and so on. It makes a huge difference, and is not quite user friendly to do it yourself, plus, it is not very clear how to do it yourself in the first place. If in rFactor1 it was complicated to do handling/vehicle dynamics, in rFactor2 is almost impossible. I love ISI their work and rFactor2, i'll wait, as I always did, but sadly many modders went onto easier (and less advanced) games.