There's no point in debating realistic physics, none of us step into 500+ horsepower machines and drive them on these tracks on a regular basis. But GT has flaws that have been in the series for generations now and what we have seen and read about Sport confirms PD still cares more about purty interiors than evolving their gameplay. Its not about Forza vs GT, Donald. In have spent more time with GT 1, 2, or 3 alone than I have the entire Forza series combined :)
And no one is saying annual, either. There can be some wiggle room between once a gen and every year.