Car tyre

A technology for automobile tires and tires, which is applied to tire parts, tire treads/tread patterns, vehicle components, etc. It can solve problems such as increased load, excessive and very sudden changes in tread marks, and reduced load, etc., to achieve Effects of increased structural rigidity, excellent drivability, and high structural uniformity

Active Publication Date: 2016-03-02
PIRELLI TYRE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The applicant believes that this characteristic arises, at least in part, from the fact that if the tire is subjected to sudden acceleration and / or during cornering, resulting in a higher and / or more sudden load transfer to the tire, the load on the inside of the tire will Excessive reduction, and the load on the outside of the tire will increase excessively, causing excessive and very sudden changes in the tire footprint

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0067] exist Figure 2 to Figure 7 In , a tire 1 with a tread 2 according to the invention is shown.

[0068] The tire 1 is of conventional construction and comprises: a carcass; a tread band located at the top of the carcass; a pair of axially opposite sidewalls terminating in a In the bead reinforced by the bead core and the corresponding bead filler. The tire preferably also comprises a belt structure interposed between the carcass and the tread band. The carcass is reinforced by one or more carcass plies secured to bead cores, while the belt structure consists of two belt strips radially superimposed on each other. The belt strips are formed from rubberized fabric parts enclosing metal cords in each belt strip parallel to each other and intersecting the metal cords in adjacent belt strips and preferably The metal cords in adjacent belt strips are inclined symmetrically with respect to the equatorial plane. Preferably, the belt structure further comprises a third belt l...

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PUM

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Abstract

Tyre (1) having a tread (2) comprising a central portion (L1) located across an equatorial plane (X-X), a first shoulder portion (L2) located towards an outer side of the tyre and a second shoulder portion (L3) located towards an inner side of the tyre, the central portion (L1) being separated from the first shoulder portion by two first circumferential grooves (3, 6), wherein - the said first shoulder portion (L2) and said second shoulder portion (L3) comprise a plurality of first transverse grooves (56, 66) having a first end located substantially at the respective edge of the tread (2), having a width greater than or equal to about 4 mm and an axial extension equal to at least 50% of the width of the shoulder portion in which they are located; - the number of said first transverse grooves (56, 66) of the first shoulder portion (L2) is lower than the number of said first transverse grooves of the second shoulder portion (L3); - the central portion (L1) comprises at least one circumferential rib (9, 10, 11), comprising a plurality of second transverse grooves (16, 17, 18); and - the second transverse grooves (16, 17, 18) have a maximum width smaller than or equal to about 3mm and define in said at least one circumferential rib (9, 10, 11) a void-to-rubber ratio smaller than or equal to about 0.06.

Description

technical field [0001] The invention relates to an automobile tire, in particular to a high-performance or ultra-high-performance automobile tire. Background technique [0002] A motor vehicle tire has a tread provided with blocks delimited by circumferential grooves extending in a generally longitudinal direction and transverse grooves extending in a generally axial direction. The intersecting of these grooves results in the blocks being formed into different suitably conceived shapes and in the arrangement of the blocks along side-by-side circumferential rows each comprised between two successive circumferential grooves. [0003] Circumferential grooves can affect the directionality and stability characteristics of a running tire with respect to side (slip) thrusts oriented parallel to the tire's axis of rotation. [0004] The transverse grooves in turn can affect the traction characteristics of the tire, ie the ability of the tire to transmit tangential thrust parallel t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/00B60C11/03
CPCB60C11/0304B60C11/0318B60C2011/0341B60C2011/0365B60C11/1392B60C11/033B60C2011/0353B60C2011/0348B60C2011/0351B60C2011/0381B60C2011/0383B60C11/03B60C11/04B60C11/0306B60C2011/0355B60C2011/036
Inventor G·科隆博R·伯尔佐尼S·比奇D·洛伦泽蒂
Owner PIRELLI TYRE SPA
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