Tire Pressure?

But my post has 3 parts.

1 is to get the exact tires and kind of vehicle right.Ok, this makes sense.

2 is the part you dont understand about the universal used formula What...universal formula? all over the world wich has a power in it(What power are you talking about? and what is it applied to? , and the different powers used in American and European system, and that to laws of nature this should be one power This doesn't make any sense to me at all.. This power formula was introduced in 1928 for diagonal tires what are diagonal tires?with power 0,585 power 0,585???and was meanth meanth? for the tire-fitter to use a simple formula to determine needed pressure, but totally missed its goal because almost nobody understands the power part in it. Europe chached chached?the power for radial tires to 0.8 for all kind of radial tires about 1970 and America to different powers of 0.5, 0.65, 0.7 and as late as 2006 chanched the 0.5 and 0.65 for P-tires and XL to that of Europe of 0.8. For C-load and up ( LT and truck tires) America still uses 0.7 power.
This all to calculate loadcapacity for a pressure.

3th part is the copy what copy? where is it? how is it applicable to this subject? of text I used in other topic what other topic? to show wich data are needed from tires and vehicle before we can calculate.