manufacturing a tire
The tire production process is complex, long and very meticulous. This is how Michelin ensures constant quality.
To obtain a homogeneous mixture, the rubber components are mixed at high temperatures in a great 200 liter mixer. Then, carbon black is incorporated in this very viscous mixture. The result thus obtained is formed in sheets.
Cord plies, cut into strips, are placed on top.
The first product to be positionned is the inside rubber layer: it is waterproof and serves as an inner tube (tubeless tires). The casing ply is then placed transversally, and the bead wires are then positioned on each side of the ply. Rubber fillings and sidewall protection layers conclude the assembly process.
The conformation operation gives the tire its nearly final appearance.
During curing, the tire is placed in a water and steam heated mold. Internal pressure pins the tire against the sides of the mold. This is when the tread pattern and external markings are impressed into its surface.
This 'vulcanization process' ensures the perfect cohesion between all components. Once cured, the material becomes firm, resistant to abrasions and able to systematically come back to its initial shape.
The MICHELIN tire is ready!