Tires: Air Presure, air presure, air gauge

Question
How do you find the air presure in a tire with out an air gauge?

Answer
John,

The answer is you can not.

However, if you take the load on the tire and divide by the size of the tire's footprint, you'll get the average footprint pressure - which some people incorrectly think is the same as the inflation pressure.

Here's a link that proves it:

http://www.performancesimulations.com/fact-or-fiction-tires-1.htm