When it comes to selecting the best new tyres for your vehicle, the chances are that you will be drawn to the rubber structure and the tyre tread pattern – specifically how well adapted it is to your local terrain and climate.
But do you ever think about the structure underneath the surface rubber?
Under the rubber lies a complex framework known as the carcass – responsible for upholding the tyre’s shape and its structure, as well as its strength and flexibility. Keep reading as we break down the different components of this carcass and look at how different tyre types differ in terms of their inner framework.
What is the Tyre Carcass?
The tyre carcass is the structure which sits underneath the rubber, also known as the framework.
It consists of layers of textile cords, comprising polyester, nylon and other textiles, as well as added steel when tyres require extra strength and stability.
These fabric cords are embedded into the rubber of the tyre, reinforcing its strength and allowing it to hold its shape under the pressure of both tyre inflation and the weight of the vehicle. The carcass is also responsible for managing the way lumps and bumps in the road are absorbed and enables the tyre to uphold its shape while also adapting to the state of the road surfaces / terrain.
Needless to say, the carcass plays a major role in the safety and stability of the tyre. But did you know it can also impact performance?
The Link Between the Tyre Carcass and Vehicle Performance
When you hear talk about the tyre ply, this is referring to the carcass and its structure.
You see, the textile cords that make up the carcass framework are layered and arranged in a series of plies – the number and density of which directly affect how strong and how durable the tyre is.
A tyre with more plies, that is more layers of textile cords, will offer a firmer tyre finish which is strong and can withhold a heavier weight while remaining resistant to punctures. A tyre with fewer plies will be more flexible and will therefore facilitate a comfortable drive that handles off-road and mixed terrain more effectively.
How To Know Which Tyres You Need
The carcass is an unseen but crucial component of the tyre that you need to be aware of.
Not only should drivers understand the design and structure of the carcass, but they need to recognise the impact of damage to the tyre and what that does to the carcass. Cuts in the sidewall or punctures in the tread pattern alter the framework of the carcass and can lead to extensive damage if left untreated.
Drivers also need to know what role the carcass plays in overall design and suitability for different journeys, vehicles, and uses. The carcass of a tyre directly relates to its load rating, that is the maximum weight the tyre can safely carry – and also affects handling on different terrains. Be sure to choose tyres that match the weight of your vehicle and that are compatible with your local journey.
For more information on tyre types and designs, head to our Tyres.co.uk Knowledge Hub. Or you can access direct support and bespoke advice via our team of experts.
