What are the components of a car tire's structure?
- 30/07/2025
- news
1. Tread
The tread is the thick rubber layer that comes into direct contact with the road surface. It is highly resistant to punctures and vibrations, helping to protect the tire's internal structure and the belts beneath the surface. Specially formulated rubber compounds with high internal corrosion resistance are used to enhance the tire’s durability and driving lifespan.
2. Sidewall
The sidewall is located between the shoulder and the bead of the tire. It protects the internal structure and contributes to a smooth driving experience through its flexibility. The sidewall also displays important markings such as tire type, size, construction, tread pattern, manufacturer, brand name, and other specifications.
3. Shoulder
The shoulder lies between the tread and the sidewall. It is the thickest part of the tire and is designed to help dissipate the heat generated inside the tire during driving, quickly and efficiently.
4. Belt or Reinforced Ply Layer
Positioned between the tread and the tire carcass, this layer consists of twisted cords that strengthen the tire. It helps absorb external shocks and prevents damage or fragmentation of the tread by protecting it from direct contact with the carcass. This layer also prevents the separation of rubber layers and the carcass. The belt acts as a strong reinforcement that runs circumferentially between the tread and the carcass.
5. Carcass (Body Ply)
The carcass is the most crucial part of the tire. It consists of multiple layers of reinforcing cords that absorb internal air pressure, vehicle weight, and road vibrations.
6. Inner Liner
The inner liner serves as a substitute for an inner tube and is made from rubber compounds with low air permeability, typically butyl, synthetic rubber, or polyisoprene. Its main function is to retain high air pressure inside the tire.
7. Bead
The bead is the part of the tire that contacts the wheel rim. It wraps around the ends of the reinforcing cords and secures the tire to the rim. The bead consists of several elements, including steel wires, bead cores, rubber, and fabric. It is designed to hold the tire in place, even in cases of sudden air pressure loss, helping prevent the tire from coming off the rim while driving.
When you think about tires, let “Tire Service” take care of them.
