Pardon my question but that chart looks wonderfully official & quantitative but I'm unable to understand what it actually means. Would the wise ones kindly point towards documents/books that would help me understand? What does the skid marking from this thread have to do with? Burning rubber on a really fast bike? Is this off-roading or some form of cycling that is simply unknown to me? I'm not even sure why a 14, 17 or 18 makes a difference in terms of braking...is this sheer velocity and momentum achieved vs the pressure required to apply the brakes?

This is gonna be my last question since it appears that I am woefully unprepared to even READ this messages...