If under lateral acceleration contact patch area is distorted due to tire construction or contact pressure is very uneven within it for sure available grip will be reduced. The geometrical effect is in principle being considered by the simulations and contact patch and its loads are also determined. There should be no need to account for those. That's why I asked if someone with experience in tire tool has done tests with extremely low pressures. For rF1 or other sims not simulating tires, such load sensitivity has a reason to be there. Not for rF2 tire model.