Originally Posted by
jfowler85
Tractive force is independent of contact surface area.
F=muN, where mu is the proportionality constant and N is the apparent force of the surfaces pressing together.
Ok. What I find is too high of a pressure causes the tire to lose (some) contact over road imperfections. Lower pressure (which gives a larger contact patch) maintains better grip / road contact. So if it's not the contact patch, what's the science here?