Tire sidewall markings, what they mean...

In addition to the tire's brand and product line names (tire model), there is a lot of information provided by the manufacturer on the sidewalls of the tires they produce. Some of the branded information provides the tire's basic dimensions and identifies the week and year that it was produced. 

Other branding lists the types of materials used internally to reinforce the rubber, along with the tire's maximum inflation pressures and loads. Other markings confirm that the manufacturer certifies that the tire meets various tire industry safety standards and measures up to governmental regulations.

https://canadasafetycouncil.org/traffic-safety 

While not all information is branded on every tire, the illustration includes the typical information found on many tires.

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