You might have seen a Speed Symbol (also know as Speed Rating) marked on the sidewall of your truck & trailer tires after load index marking, do you know what that speed symbol means ? If your answer is “No” we will explain the significance of this Speed Symbol in details in this article.
The speed symbol is a letter indicating the speed at which a tire can carry a load corresponding to its load index. In the above example, the speed symbol “L” mentioned after the load index, indicates that this tire is rated for the maximum speed of 75 mph (120 km/h) at the load as per its load index.
However, it is not recommended to drive at maximum speed as per the speed symbol. It is always safe to drive below the recommended speed rating.
Below table explains all the speed symbols which you can see on the truck tires:
For more details on truck tire sidewall markings click here…
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