If you take a look at your tire’s sidewall, you’ll likely come across a slew of numbers (and perhaps a few letters) that are seemingly out of order and don’t seem to fit. On first glance, you might think that this is nothing more than an embedded barcode or some sort of identifier to help with the specific tire manufacturer’s quality control. While we don’t put it past you for thinking this, each number (and letter) that appears on the sidewall is an indicator of some piece of key information. On that note, we thought it fitting to debunk this number and tell you exactly what it means.