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Tire Construction

A closer look at Metzeler technology

Bias tire

Also known as conventional or cross-ply tire. The structure of this tire is made of a carcass where depending on the different speed and load specifications, two or more layers are overlapped. Each layer is made of textile cords coated into rubber and the overlap angle is designed in order to give the tire the required dynamic characteristics.

Bias-belted tire

The structure of this type of tire consists a conventional carcass and a belt made of two or more crossed layers. The diffe- rence between carcass and belt is given by the different objectives that they have to reach and consequently the different materials that are used: the belt is generally made from an aramid fibre and it’s function is reduce the dynamic deformation caused by centrifugal forces (reduce tyre "growth" at high speed), while the carcass has to mainly give the tyre its stiffness and load carrying capacity.

Belted tire with radial carcass

The main difference of the bias-belted tire is given by the structure of the carcass that in this case is radial. This means that its cords are wrapped radially around the tire, from one bead to the other. In this way low-section tires can be realized, giving big advantages in terms of cornering stability, reduced weight and high-speed performance. It has extremely high rigidity allowing the possibility to tune the belt winding spacing to produce varying levels of stiffness from shoulder to crown.

 

0° steel belt tire with radial carcass

Patented Metzeler technology for front and rear tires utilising a radial carcass and a single layer belt made of steel cord. If you think of the rolling direction of the tire, the belt is wound circumferentially around the carcass giving an angle of almost 0°. The advantages of using steel are its extremely high rigidity and the possibility to tune the winding spacing allowing varying levels of stiffness from shoulder to crown.

Maps

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