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  • Writer's pictureSophia Dee

Car Tyre Nomenclature and its Types

A tyre could be defined as a ring and circular shaped element of a car that is the only contact point with the ground's surface. They are installed on the car rims and comprise air that is compressed. Ever since they were invented, natural rubber had been used extensively in making them. The modern-day car tyres also use other kinds of materials like fabric, synthetic rubber, carbon black, steel wires, and few other compounds. Tyres are used the world over on a wide number of transport systems like aeroplanes, bicycles, passenger cars, vans, to name a few.


Tyres are classified into two classes, as per the absence or presence of tubes in their make. They could be tubeless or tubed car tyres depending on the same. They are also classified based on their skeleton or construction, which is referred to as carcass:

· Bias or cross-ply tyres: The angle of the ply cords, in this case, is 30 to 40 degrees to the axis of the tyre.

· Radial ply tyres: In this case, the ply cords move on the radial side.

· Belted-bias ply tyres: This is an amalgamation of the above two types of tyres.

The tyres manufactured now are mostly radial and tubeless.

To understand the importance and significance of car tyres, it is necessary to know about the benefits that they offer in the long run:

1. They are responsible for maintaining proper contact between the ground and the vehicle by offering suitable traction.

2. It supports the overall load of the car.

3. It provides sufficient cushioning to the passengers on board from the shocks on bad roads.

4. They deal with the numerous forces that act on the car while it is being driven.

The nomenclature of Dunlop tyres Wolverhampton could be difficult to comprehend in the beginning. However, with proper guidance and consultation from experts, you could decipher the markings present on the tyre's sidewall. The tyre's size is denoted by a method defined by the manufacturer's world over. It is often referred to as the tyre code or tyre nomenclature and written on its sidewall. Every number or letter has some significance behind it. It would not be possible to choose a tyre without understanding the specifications marked on the car's tyre. Here is an example of a tyre's nomenclature to help you understand each of the terms better:

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174/55 R 13

· 174: The first 3 digits signify the width of the tyre measured in millimetres and sectioned nominally.

· 55: The next digits are known to be the aspect ratio, where the fraction of the tyre's height is a percentage of the fraction of the tyre's width, i.e. 55% of 174= 96mm (approximately).

· R: This letter indicates the tyre's construction which in this case is radial.

· 13: This signifies the rim's diameter or code measured in inches.

Additionally, some tyre manufacturers also mention the car tyres' load index and speed rating in their nomenclature. Based on these elements, you could gauge the maximum load and speed that a car tyre can handle. The buyer of tyres could figure this code out by referring to the manufacturer's manual or any other standard catalogue.

Before purchasing new car tyres, you must consider this along with a few other parameters:

1. Cost (hidden and the one on the price label)

2. Noise

3. Fuel Efficiency or Economy

4. Trustworthy manufacturer

5. Weather

6. Performance on road

7. Run Flat Tyres

8. Driving style and habits

Once you have considered all these aspects, you would ultimately enjoy the benefits of purchasing a tyre that offers great handling, cornering, grip, aquaplaning, controlled internal noise, and consumption of fuel. This would ultimately help improve the longevity and performance of your car, ensuring you experience a smooth driving experience. Mobile tyre fitting Wolverhampton also becomes easy if all these details are known to you and the expert dealing with your tyre.

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