On the topic of door stickers, if you arent running stock size tires they no longer apply. My 18s are 40-42psi every day.
And yes, most people air up on track days to avoid the rolling over the sidewall. Here is the trick. If you dont have access to air while at the track, put a bit more air in your tires than you think you might need. Now, rub some chalk on the outer 1" or so of tread, and a bit down the sidewall (on the outside edge). Now go out on your first run.
If the tire is overinflated, there will be some chalk left on the edge of the tread. If underinflated, some of the chalk will be missing from the sidewall. Good inflation will remove the chalk from the tread, but it should still be on the sidewall. Simple enough?
