When I referred to the tire friction circle that had nothing to do with tire choice, nor opting at the beginning of the season for a tire with more friction, but rather a dynamic car control tactic. Good car control skills allow you to be more efficient with what you have. For example, you need to be easing out of the throttle or brake while you're start turning the steering wheel. Get your braking mostly done before you ask your tires to turn, and then as you are unwinding the wheel back to neutral at the turn exit you can ease in more throttle so you again don't ask too much of the tires. Stay smooth, and avoid abruptness or asking two things of your tires at once. If you find you can't do this and have to make panic maneuvers it's only because you planned badly and were too hot.
I was replying to guroo270, not you. I'm not sure why you chose to reply to my post, other than the fact that you're being argumentative.
If it seems as if you're throwing down with everyone else on this thread then you need to take a look inward and ask why that is.