Tire is the part of wheel made from rubber materials. Its function is to permeate the vibrations generated by surface of the scraggly road and to obtain the big friction force to surface of road. Inner of tire is generally filled by air have the selected pressure. This tire construction referred by the pump tire (pneumatic tire). Besides, tire generally consist of two shares, that is external tire and inner tube. But exist also, the tire only consisting of the just external tire without inner tube. This tire referred by the tubeless tire.
The outside tire made of the rubber materials and it have high resilience to wear. The inside tire given by addition some carcass layer, its function is to adding the tire resilience to high pressure and deformation caused of to crashes and the vehicle burden of itself. At the tire palm shares, that is the tire shares direct contact with surface of road, its made thicker and have the selected path to prevent slip.
If its seen from base form, the groove at tire palm divided become 3 type, that is rib, lug, and block. The rib palm pattern have greatness in the case of giration and lessen the happening of slip. Tire with this type very compatible used in pave road. The lug palm pattern type have good traction and power transmission. Tire with palm pattern be like this, is usually used for the vehicle of jip and dump truck type. The block palm pattern type have the block forms separateness between one another. This tire type is used for the vehicle pass the muddy and heavy field.
Source : Automotive Encyclopedia
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