Writing on the tyre wall explained.
Have you ever wondered what all the writing on the side of a tyre means?
There are two main purposes of the writing that you'll see on the sidewall of your tyres.
The first is to help identify the size and specification of the tyres correctly. The second is to confirm that the tyre has been tested and approved to European and other country safety standards. The European mandatory is known as 'E' marking.
It is not recommended to have tyres with a lower speed rating or load capacity than the manufacturer recommended tyre specification for your vehicle, or to have a combination of different tyre construction types.
Load Index and Speed Ratings
The majority of tyres carry coded markings on them, which correspond to their load carrying and maximum speed capabilities.
For example: 90Y
90 = Index of maximum load carrying capacity per tyre, in this case equates to 600kg.
Y = Symbol which equates to a speed rating of 300km/h (approximately 186mph)
The load index is a numerical code, which corresponds to the maximum load a tyre can carry at the speed indicated by its speed symbol, under specific service conditions. For specific load index details see below.
|Load Index||Kilograms||Load Index||Kilograms||Load Index||Kilograms|
The speed symbol indicates the speed at which the tyre can carry the load corresponding with its load index. For specific speed rating details see below.
|Speed Symbol||Approx. MPH||Approx. KM/H|