The document discusses tire pressure, noting that the tire pressure monitoring system (TPMS) is federally mandated and will illuminate a dashboard light if pressure is low. It advises checking the driver's side door frame for the recommended PSI, kPa, or BAR and notes the pressure listed is for the maximum listed on the tire sidewall. The document provides instructions for accurately checking tire pressure using a pressure gauge and describes signs of underinflation as well as how to inflate or deflate tires as needed.