Have any of you blokes come across a graph that gives the tyre pressure verses speed tradeoff ie: the higher the tyre pressure the greater the speed due to less rolling resistance. I know there would be alot of variables like road surface, tyre compound, load etc but I'm sure Sheldon or someone must plotted a graph that shows that for every 10psi decrease in tyre pressure, you loose 'X' mph for the same amount of energy.