Comment: Using the <span class="highlight">4psi</span> Tyre Inflation Rule

Boyle's law (sometimes referred to as the Boyle–Mariotte law) states that the absolute pressure and volume of a given mass of confined gas are inversely proportional, if the temperature remains unchanged within a closed system. Thus, it states that the product of pressure and volume is a constant for a given mass of confined gas as long as the temperature is constant. The law was named after chemist and physicist Robert Boyle, who published the original law in 1662.

http://en.wikipedia.org/wiki/Boyle%27s_law

Clearly in my examples the temperature is changing so Boyle's law is not applicable.

If you don't understand something, then please ask rather than making misleading statements.