Understanding Tyre Specifications


Have you ever gone to the tyre shop and stood there embarrassed when asked about your tyre specifications? You are not alone. Not many understand the specifications on tyres and what they mean.


UNDERSTANDING TYRE SPECIFICATIONS


Tyres are available in in a variety of sizes and designs. Car models typically are compatible with more than one option and this can make the choice of choosing a tyre confusing.


Learning how to read tyre specifications can make the replacement of tyres easier. This article will explain what you should look out for on tyres and what they mean


WHERE TO FIND YOUR TYRE SIZE


You will be able to find the recommended tyre size in the vehicle's owner manual from the vehicle manufacturer. Tyre size information can also be found on the tyre placard, often inside the drivers door jamb. The tyre placard will often state tyre size, as well as recommended tyre pressures.


Another place to find the tyres code system is at the side wall where it is moulded into. This informs you about the technical capabilities, so you drive appropriately depending on the type of tyre you currently have. It will also help you better determine what tyre you need to replace it with should it be time to switch.



TYRE SIZES EXPLAINED


The sidewall code provides information on tyre size and construction (e.g. whether they’re radial), as well as their load-carrying capacity and speed rating.


For example, the code on a common fitment for Singapore cars is: 205/65R15 95H


205 indicates the normal section width of the tyre in millimetres (205mm).


65 indicates its aspect ratio, a comparison of the tyre’s section height with its section width (65 indicates the height is 65% of its width).


R indicates radial ply construction.


15 indicates the nominal diameter of the wheel rim (15 inches).


95H is a symbol indicating the maximum load capacity and speed at which the tyre can be safely operated, subject to the tyre being in sound condition, correctly fitted, and with recommended inflation pressures (95 represents a maximum load of 690kg per tyre; H represents a maximum speed of 210km/h).


Remember these details and they can help you the next time you go for a tyre change.


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