The measurement describes the recommended inflation level, typically expressed in pounds per square inch (PSI), for a specific tire size. The tire size, in this instance, is indicated by the alphanumeric code 275/55R20, representing the tire’s width, aspect ratio, construction type (radial), and rim diameter in inches, respectively. Proper inflation is crucial for optimal tire performance and safety.
Maintaining the correct level offers several advantages, including optimized fuel efficiency, even tread wear, and improved handling characteristics. Historically, manufacturers determined recommended levels through extensive testing to balance ride comfort, load-carrying capacity, and overall performance. Deviations from the prescribed amount can lead to premature tire failure, reduced fuel economy, and compromised vehicle control.
