Tyre Guides
Plain-English decoders for everything printed on a tyre: the size code, the DOT date code, the EU label, US UTQG gradings and pressure basics.
All guide sizes in our reference
- How to Read a Tyre Size
- DOT Date Code Checker — How Old Are My Tyres?
- EU Tyre Label Explained
- US UTQG Ratings Explained
- Tyre Pressure Basics
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Popular Tyre Kit
Once you can read the codes, every size page on this site gives you the computed numbers behind them.
Last updated:
Data: computed reference values (ETRTO tyre-size arithmetic), build date 22 July 2026. Reference only — always follow your vehicle manufacturer's placard or handbook.