3.5 V6 Luxury CVT 4WD Euro 6
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£30,490
- Year/Month: 2016/0
- Stock ID: T116621
- Transmission: Automatic
- CC: 3500
- Mileage: 71500
- Fuel Type: Hybrid / Petrol
- 355 Views
In conventional tires, also called ‘cross-ply’ tires, the reinforcement can be composed of very thin steel wires crossed diagonally with each other to form a ‘ply’, when it is in the Lexus Rx 450h CVT for sale, this type of tire offers as an advantage a resistance to shocks and very greater stresses, especially the lateral ones, but has as a weak point a lower contact on the ground compared to a radial type tire.
The Type
A radial type tire has as its primary characteristic the arrangement of the armature transversely to the direction of travel. The advantages of this solution are a contact of the tread with the ground that is decidedly superior to a conventional tire and therefore superior traction. The disadvantage is that the carcass armor, especially on the shoulders, is very fragile and makes it more vulnerable to the penetration of foreign bodies. The Payer who pays the Lexus Rx 450h CVT price should know that in the automotive field, almost all tires are now radial because their characteristic makes them optimal for high-speed gears. A radial structure tire has a carcass made up of cables (steel, rayon or nylon) arranged radially with respect to the plane of symmetry of the tread, unlike the cross-ply structure in which the carcass is made up of cloths arranged diagonally, at an angle inclination with respect to the plane of symmetry of the tread.
The Distribution
The carcass is then inserted into a deformable rubber structure with good adhesion characteristics with the road surface. The air contained inside the tire gives it structural stability and rigidity; therefore, in the presence of adequate inflation pressure, the tire can transmit considerable forces to the rim; these forces pass through the tire-rim contact areas, the so-called bead, consisting of a rubber-coated steel cable that securely connects the cover to the rim edge. The forces that the tire exchanges with the ground are not applied in a single point, but are the result of actions distributed over the entire contact area, by virtue of the deformability of the tire itself. The distribution of the pressures on the contact area is not uniform, it is experimentally observed that it depends on the direction of rotation, presenting higher pressure values in the front area of the impression.
The Pressure
The effect is that the resultant of these pressures do not pass through the center of rotation of the wheel but is shifted in the direction of travel, generating a resistant moment that opposes the rolling. Tangential forces can be explained by the tire thanks to the adhesion it offers in contact with the road surface. Adherence is given by the combined action of two different mechanisms i.e. hysteresis and adhesion. The hysteresis is also called meshing, expresses the tire's ability to deform by adapting to the irregularities of the road surface. During this deformation, the tire follows real hysteresis cycles dissipating energy; this phenomenon is prevalent at low speeds and in wet asphalt conditions. Adhesion is given by the intermolecular attraction forces between the rubber and the asphalt; this mechanism is prevalent at high speeds and on dry roads but is less so in the case of wet asphalt. Therefore, in the wet, soft compounds with high hysteresis are preferred, which require more energy for rolling, but guarantee greater adherence.