Master Tech Class Room

Basic Tyre Knowledge

The sidewall provides valuable information about the tyre including the specifications, the brand, and the type of construction.

All numbers are standardized and recognized by tyre manufacturers around the world.

Codes:
1. Section Width(mm)
2. Aspect Ratio(Section height as a percentage of the section width).
3. Rim Diameter(in)
4. Load Index
5. Speed Rating

Load Index and Speed Rating

Load index corresponds to the load capacity while speed rating is designated using letters from J to Z and represents the maximum speed of the tyre.

These two factors are interdependent. Please refer to the tables below for the load index and speed rating.

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Read More:

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TIME TO LEARN TIRE TERMS - https://bit.ly/3oUF6Ud

LEARN HOW TO READ YOUR TIRE SIDEWALL - https://bit.ly/3utiJpK

NOISY TIRES? - https://bit.ly/3p4melK

THE DEFINITIVE GUIDE TO RUN FLAT TIRES - https://bit.ly/3p8dHyh

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HOW ARE BULLETPROOF TIRES MANUFACTURED? - https://bit.ly/3fu4GfI

All about tires, what is the meaning of numbers on the Tyre? The two-digit number that usually follows the tire's section width tells us the aspect ratio, or tire profile measurement. In this example,

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