How easy is it to let the air out of an airline tire?
“How easy is it to let the air out of an airline tire?”
Good question.
http://www.boeing.com/commercial/aeromagazine/aero_05/textonly/m03txt.html
Airplane wheel/tire assemblies are inflated to high pressures (many in excess of 200 psi).
Trying to deflate one with your finger might not be a good idea.
They do have an OPR - overinflation pressure relief valve.