Load Index Rating
Know your loads
The majority of tyres carry coded markings on them, which correspond to their load carrying and maximum speed capabilities. The load index is a numerical code associated with the maximum load a tyre can carry (see load index table) at the speed indicated by its speed symbol (see Speed Symbol table) under service conditions specified by the tyre manufacturer. For example, 91 = Load Index (91 equates to a weight of approximately 615 kg) Load index tables
All tyres must have a service description (i.e. load index and speed index) If the vehicle was to operate outside the service description indicated on the sidewall e.g. at a higher speed or overloaded then the tyres would be deemed to be unsuitable for the use, and a prosecution would follow.