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MAKING SENSE OF ISO LOAD INDEX AND SPEED SYMBOL

The ISO* LOAD INDEX is a numerical code associated with the max load a tire can carry at the speed indicated by its speed symbol (under service conditions specified by the tire manufacturer). (Note: 1 kg – 2.205 lbs.)

The ISO* SPEED SYMBOL indicates the speed at which the tire can carry a load corresponding to its Load Index (under service conditions specified by the tire manufacturer).**

*International Standardization Organization **Exceeding the legal speed limit is neither recommended nor endorsed.
ISO Load Speed Index
L = Speed Rating
144/141 = Load Index (ISO)