Do you know what’s written on your tyre? Wait, do you know something is written on your tyre? Yeah, it is called tyre markings, and they provide some very useful information. A question might pop in your head: who reads tyre marking, and it might be something solely for the manufacturers, just like the ‘developers only’ settings in the mobile, which we generally avoid.
No, a tyre speaks to us in a coded language, and we should learn how to read that language to know our best options and get a clear understanding of our needs while purchasing a tyre. The markings on the Tyres Bold conveys two necessary information –
- It tells how safe a tyre is by revealing details about the safety standards
- Size, shape and other specifications of a tyre
If you look at the sidewall of a tyre, the first thing you will notice is some random numbers separated by an oblique sign. These numbers indicate the size of a tyre.
For example, if the sidewall of the tyre shows 250/60R15 95 H, then these numbers will indicate
250 – Width of the tyre
A tyre’s width is measured in millimetres, so this means that the tyre is 250 mm wide from sidewall to sidewall.
60 – Aspect Ratio
The number after the oblique represents the aspect ratio. This means the ratio of the height of the tyre concerning its width. This is calculated by dividing the height of the tyre’s section by its width.
R – Tyre Construction
The alphabet after the aspect ratio indicates the Cheap Tyres St Helens construction. In this case, the letter R denotes that the tyre is of radial construction like many other modern tyres. If there is a B in place of R, that means that the tyre is of Bias-Play or if it’s D, that means it is of diagonal construction.
15 – Wheel Diameter
The number here denotes the diameter of the wheel rim, which is measured in inches. We can say that it is the most important identification as it determines the size of the rim, which ultimately helps in selecting the tyre.
95 – Load Index
Load index determines the load-carrying capacity of the tyre when it is inflated. A good tyre has more carrying capacity, which means that it can support more load. This number denotes the index and not the actual amount of weight.
H – Speed Rating
This number indicates the tyre’s speed rating, which means the maximum speed a tyre can handle while carrying the load as per its maximum capacity. It is important to know that speed rating are mainly marked on passenger tyres and are always denoted by a letter ranging from A to Z.
Name Of The Manufacturer – If you look at the sidewall, the first thing you will probably notice is the name of the brand. It is generally marked in bold, capital letters.
M+S – These letters indicate that the tyre is designed to perform in both muddy and snowy conditions.
Date Of Manufacturing – Some brands provide the manufacturing month & year of the tyre on the sidewall. The tyres are rubber compounds, synthetic polymers and other materials, and their condition could deteriorate with time.
Temperature Indicator – When the temperature is more than 7 degree Celsius, summer tyres are used as winter tyres cannot perform efficiently at places which gets warmer than 7 degree Celsius and vice-versa. It is therefore important to not take the tyres beyond their working temperatures. A temperature indicator indicates the maximum and minimum temperature in which a tyre could perform well.
Country of Manufacturer – You can also see the country where the tyre was made on the sidewall.
We said the above was true; every tyre speaks a coded language, and as we have seen, these codes or markings are easy to understand. If you love your ‘Hotwheels’, bring out the decipherer in you, and you will be rewarded with the understanding of what is best for your car.