Apologies in advance, my track modding knowledge is essentially zero. Currently, do the tracks files allow a defined global track elevation (in terms of 'altitude' above sea-level)? This is important because air density changes with elevation which should effect both aerodynamics and engine physics heavily. Air temperature is covered (although not sure if it interacts with the physics) but elevation/air density perhaps is not? Obviously at higher elevation the air is thinner and you get very different car performance in both these aspects. Air density at sea level is 1.225kg/m^3 while at 2,500m it is significantly smaller at ~0.95kg/m^3. For instance, the Autodromo Hermanos Rodríguez sits at an elevation of around 2,400 metres and F1 teams used to experience some 20-25% less engine power and aero (amount varies depends what you hear and read). Similarly, Autodromo José Carlos Pace (Interlagos) sits at 800m elevation and although not quite as severe as what Mexico used to be, still has a measurable effect. Interlagos scheduled at the end of the season has been a blessing in the past few years with the 8 engine ruling as it's not that hungry in terms of engine wear.