What Are Tyre Markers And What Do They Represent?

Tyre Markers

Your vehicle consists of various parts, each of which has a unique function. Together, they help your car or SUV run optimally on the road. Since all of these are vital, it is necessary to know a lot of information. That means you must have a clear idea about the specifications of your engine, tyres, brakes, etc. Most of these last for a pretty long time without needing any repairs or replacements. At least, that is the case if you maintain them properly. But you often have to handle tyres differently. Since they are prone to punctures and other issues, it is necessary to have all the information about them at hand.

So, what exactly are these markers? Each of the cheap tyres Newbury has some letters and numbers imprinted on the sidewall. But these are not arbitrary. They represent the specifications unique to that tyre. These include details about tyre sizing, load index and speed rating. Other information about the tyre origin and safety might also be available. In this article, we will learn more about these signs.

1. Tyre Size:

When you mount a set of tyres in your vehicle, they must be the correct size. That is because ill-fitting tyres can have a considerable negative impact on the safety and performance of the car. So, to find the best radials for your vehicle, you have to refer to the tyre size specifications. These are typically listed in the manufacturer’s guidebook and on the sidewalls of your old tyres. The markings on the rubber look something like this: 255/55 R 16. Each of these alphanumeric symbols has a specific meaning. We will describe them one by one below.

255 – Measured in millimetres, this number indicates the tyre width from one sidewall to another.

55 – Known as the aspect ratio, this number represents the height of the tyre relative to the width. That means, in this case, the tyre height is 55 per cent of the tyre width.

R – The standalone letter in the series represents the construction. ‘R’ stands for radial, and this type of construction is found in most tyres sold nowadays. Other types, such as ‘B’ for bias-ply and ‘D’ for diagonal, are known but less common.

16 – The final number in the series implies the wheel diameter. It is the ideal value in inches for the rim on which you should mount the corresponding tyre.

Once you have this information, you can find the correct dimensions for your tyres. Fitting larger ones is possible too. Many people prefer them as they supply a sporty look and additional traction. But it might not be the best idea since this can compromise other aspects such as safety, mileage, durability, etc. So, stick to tyres that match the specifications of your original equipment (OE).

2. Load Index:

Following the sizing information, you can usually spot another set of digits. Ranging from 65 to 105, each number represents the load-carrying capacity of the tyre. So, for instance, if the number 105 is printed on your tyre, it can carry a maximum weight of 925 kilograms. When going on a cross-country trip or moving houses, you have to load up your vehicle. But before you do so, make sure you check this load index.

3. Speed Index:

When you drive a car or SUV, it is necessary to keep the speed within the legal threshold. That will keep the vehicle stable and you safe. But the legal speed limit might not match that of the tyre. So, you must have an idea about the maximum speed at which your automobile can go. That is typically indicated on the sidewall by a letter, right beside the load index. There are ten symbols, including Q, R, S, T, H, V, VR, W, Y, and ZR. Each of them represents a particular speed limit. For instance, ‘V’ indicates that a maximum speed of 240 kilometres per hour is allowed when you fit that tyre.

4. Manufacturing Information:

Aside from the technical details, some information about the origin of the tyre is also mentioned. The brand and pattern name, date and country of manufacture, etc., are some of them.

5. Testing Status:

Before you get a set of tyres, it is critical to ensure they meet the industry safety standards. That is achievable through extensive testing. Upon passing, a European ECE type code is printed on the tyre. It is typically the letter ‘E’ followed by a number, which represents the country of approval. So, for instance, if your tyre says E11, it was tested and approved in the UK.


Tyres are vital for your car. So, every bit of information about them is useful. That is why you must always check the markings on your Dunlop Tyres Newbury. That will ensure they are always ready for the road.

Sky Smith
Author: Sky Smith

Hey, I’m Sky. I’m an automobile blogger living in UK. I like to give information about the servicing and repair of the car to the people.

Spread the love

Leave a Reply

Your email address will not be published. Required fields are marked *