Tractor tires require a specified amount of air pressure to be maintained at all times for proper operation of the machines. This air pressure is measured in pounds per square inch, or PSI. The required PSI is imprinted into the rubber of the tires near the bead, where the tire meets the metal rim of the wheel. The imprinted information may list a minimum acceptable operating pressure and a maximum (recommended) tire pressure. The air pressure should be maintained according to this information.
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