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The bead loosening system releases the tire bead from the rim of the wheel. The bead loosening system consists of an arm near the bottom right side of the tire changer. There is a shovel shaped metal piece at the end of the arm called the bead loosener shoe. The bead loosener shoe pivots and is rounded to accommodate the shape of a wheel.
When the tire is properly inflated, the air pressure within the tire keeps the bead in this groove. Reducing tire air pressure is a frequent practice among off-road vehicle drivers. [1] [2] This action widens the tire tread, enhancing the contact surface with the terrain for better traction. However, excessively low pressure can lead to ...
The bead is a thicker section of rubber, and is reinforced with braided steel cables, called the bead bundle. [1] The surface of the bead creates a seal between the tire and rim on radial and bias-ply tires. Often, the bead can become stuck to the rim after rusting or corrosion occurs, requiring the use of a bead breaker in order to be removed.
A beadlock or bead lock is a mechanical device that secures the bead of a tire to the wheel of a vehicle. Tires and wheels are designed so that when the tire is inflated , the tire pressure pushes the bead of the tire against the inside of the wheel rim so that the tire stays on the wheel and the two rotate together.
This is done by increasing contact with the ground with protrusions, similar to conventional tire treads, and analogous to athletes' cleated shoes. On tanks and armoured vehicles, grousers are usually pads attached to the tracks; but on construction vehicles they may take the form of flat plates or bars.
The distinction is primarily that hooked-bead rims lack the defined bead seat of straight side and Crochet-type rims. The tire is held in position radially by the hook without a bead seat playing a role. Without a bead seat, the primary designation of the diameter in terms of the bead seat is not applicable, and the governing diameter is the OD.
A tubeless tire (also spelled as tubeless tyre in Commonwealth English) is a pneumatic tire that does not require a separate inner tube.. Unlike pneumatic tires which use a separate inner tube, tubeless tires have continuous ribs molded integrally into the bead of the tire that are forced by air pressure into a flange on the metal rim of the wheel, sealing the tire to the rim.
Accessory spare tire mounts that fit into a car's tow hitch are also available. [38] Recreational vehicles may also have a spare tire on the rear. The wheel and tire combination may be exposed or covered with soft or hard materials and may feature logos or other designs. These rear spare tire mounts are no longer described as "continental tires".
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