Quote:
Originally Posted by loubapache
1 in of Hg is equal to 0.49 psi.
At 1 atmospheric pressure (1 bar), it is 76 cm or 30 in of Hg and that is equal to 14.7 psi.
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So then the air in my tires is actually closer to 50 PSI or 50PSI - atmospheric pressure (14.7) = 35 PSI that my tire gauge shows?