Understanding the significance of tire inflation involves recognizing that the “maximum pressure” embossed on a tire’s sidewall signifies the highest pressure the tire can safely contain. This value, often expressed in PSI (pounds per square inch), does not represent the pressure recommended for optimal vehicle performance, ride comfort, or safety. For example, a tire marked with “max tire pressure 44 psi” is certified to withstand up to 44 PSI when cold.
Ignoring the vehicle manufacturer’s guidance on tire inflation, and relying solely on the maximum pressure rating, can negatively impact vehicle handling, braking distance, and tire wear. Overinflating tires to the maximum rated pressure leads to a harsher ride, reduces the tire’s contact patch with the road surface (decreasing grip), and increases the risk of tire damage from impacts. Conversely, underinflation compromises fuel efficiency, accelerates tire wear on the edges, and elevates the risk of tire failure due to overheating.
