My simulator is designed for racing, but it can an will be used for flight just about anywhere. It will use a planet's mass to deturmine the gravity, and the air will flow over an object just like it does in real life. There will be no need to try to place tire grooves on the runways or race tracks. They will form based on where the vehicle is, it's velocity, angle parrallell to that velocity, and how much of the vehicles weight is actually on the ground.
By the way, I haven't dropped any of my projects yet. But before I go any further, I'm goint to attempt to make a pluggin for Orbiter. This plugin will measure airspeed in knots, altitude in feet, and virticle speed in feet per minute. Those are the units I'm most familior with.