In LFS I found for all cars I tried that the maximum lateral velocity a given tire could deliver was reached at the minimum (or sufficiently near to) of available tire pressures.
In real life there is a substantial drop in lateral acceleration when the pressures get too low. How low? My own car, very similar to the XFG, significantly gets worse in corners when pressures drop below 1,5 bar. And this when the tires are either cold or normal temperature.
A tire of normal width with a pressure that low or even lower deforms itself, increases slip angle and looses side traction especially in the middle of the profile. The wear at the rims but not in the center is even an indicator for a pressure that has been too low for too long. This is not the case in LFS. The lower the pressure gets the better. (Ok it heats faster - that is correct.)
In real life there is a substantial drop in lateral acceleration when the pressures get too low. How low? My own car, very similar to the XFG, significantly gets worse in corners when pressures drop below 1,5 bar. And this when the tires are either cold or normal temperature.
A tire of normal width with a pressure that low or even lower deforms itself, increases slip angle and looses side traction especially in the middle of the profile. The wear at the rims but not in the center is even an indicator for a pressure that has been too low for too long. This is not the case in LFS. The lower the pressure gets the better. (Ok it heats faster - that is correct.)