CN112848808B - Tire with a tire cover - Google Patents
Tire with a tire cover Download PDFInfo
- Publication number
- CN112848808B CN112848808B CN202110128949.XA CN202110128949A CN112848808B CN 112848808 B CN112848808 B CN 112848808B CN 202110128949 A CN202110128949 A CN 202110128949A CN 112848808 B CN112848808 B CN 112848808B
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- Prior art keywords
- tire
- rubber core
- triangular rubber
- depth
- steel wire
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/0009—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/04—Bead cores
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The application discloses a tire, which comprises: the tire comprises a tire tread layer, a waterproof line, a composite rubber core and a bead ring, wherein the tire tread layer is formed by connecting a liner layer, a tire body layer, a belt ply, a tire side and a tire crown which are sequentially arranged from inside to outside; the upper end of the hard triangular rubber core is attached to the inner side tire body and the outer side tire body, and the lower end of the hard triangular rubber core is attached to the outer side of the soft triangular rubber core and the outer side tire body; the inner side of the soft triangle rubber core is attached to the inner side of the tyre body; the lower end of the soft triangle rubber core is connected with the bead ring, the application well protects the tire body and the reverse wrapping end point of the steel wire wrapping cloth, so that the durability of the tire is not affected, the application reduces the rubber for the sidewall, reduces the rolling resistance of the tire, and improves the durability of the all-steel radial tire.
Description
Technical Field
The application relates to the technical field of passenger car tires, in particular to a tire.
Background
Due to the enhancement of human environmental awareness, low-carbon economy, energy conservation and emission reduction are becoming the subjects of economic development in various countries at present. At present, the heat generation and oil consumption of the tire are reduced, the ageing resistance is improved, and the method becomes a focus of competition of future tire enterprises. Different measures are taken in various countries in the world to deal with environmental protection problems, such as the European Union's release of the tire label act, the American environmental protection agency releases SmartWay certification and the like, and clear and higher requirements are put on various performances of all-steel radial tires, particularly the rolling resistance performance of the tires.
The sidewall of an all-steel truck radial tire is a very critical part, is a composite part of various half components and framework materials, bears the internal pressure stress of the tire and the additional stress under load, relates to the durability of the tire, and requires a strict production process.
The traditional tire side is in elliptical transition of the tire shoulder and the tire shoulder, so that the weight of the tire is increased, the rolling resistance is increased, and the material is excessively thick and generates larger heat, so that the durability of the tire is not facilitated.
Disclosure of Invention
The application provides a tire, which solves the problems that the traditional tire side mentioned in the background technology is in elliptical transition of tire shoulder and tire shoulder, the weight of the tire is increased, the rolling resistance is increased, the excessive thickness of the material generates larger heat, and the durability of the tire is not facilitated.
In order to solve the technical problems, the application discloses a tire, comprising: the tire comprises an inner liner, a tire body layer, a belt ply, a tire side, a tire tread formed by connecting a tire crown, a waterproof line, a composite rubber core and a bead ring, wherein the inner liner, the tire body layer, the belt ply, the tire side and the tire tread are sequentially arranged from inside to outside;
wherein a straight line passing through the widest point of the tire cross section in a inflated state at a rated internal pressure is defined as a horizontal axis, and a first region is formed along the outer surface of the sidewall by cutting a part of the material of the sidewall in the direction from the horizontal axis to the waterproof line; the outer side of the carcass layer is reversely wrapped at the lower end of the composite rubber core, and is also wrapped with steel wire wrapping cloth; the composite rubber core comprises a hard triangular rubber core and a soft triangular rubber core; the hard triangular rubber core is attached to the inner side and the outer side of the carcass, the lower end of the hard triangular rubber core is attached to the outer side of the soft triangular rubber core and the outer side of the carcass, the inner side of the soft triangular rubber core is attached to the inner side of the carcass, and the lower end of the soft triangular rubber core is connected with the bead ring; the steel wire wrapping cloth is arranged between the inner liner layer and the carcass layer, one end of the steel wire wrapping cloth is reversely wrapped on the carcass layer along the reverse wrapping direction of the carcass layer from the lower part of the joint of the soft triangular rubber core and the top end of the hard triangular rubber core, the other end of the steel wire wrapping cloth passes through the joint of the hard triangular rubber core and the bottom end of the soft triangular rubber core and is attached to the hard triangular rubber core, and the reverse wrapping height of the steel wire wrapping cloth is higher than the reverse wrapping height H of the carcass layer; wherein H is more than or equal to 8mm and less than or equal to 10mm; the tire further comprises a bead reinforcing adhesive, wherein two ends of the bead reinforcing adhesive are respectively connected with the inner side of the bottom of the tire side and the inner side of the bottom of the inner liner, and the bead reinforcing adhesive is completely coated on the outer side of the steel wire wrapping cloth and used for protecting the tire body layer and the anti-wrapping end points of the steel wire wrapping cloth.
Preferably, the first region is curved in the tire cross section, and forms a part of a sidewall contour line of the tire cross section.
Preferably, the first region includes a central portion, an upper transition portion formed by extending an upper end of the central portion in the horizontal axis direction, and a lower transition portion formed by extending a lower end of the central portion in the waterproof line direction; the depth of the first area gradually increases from 0 to a certain value and gradually decreases to 0 along the direction from the horizontal axis to the waterproof line of the outer surface of the sidewall; the depth of the first region is larger as the depth of the first region is closer to the geometric center of the center part, and the position with the largest depth is the maximum value of the depth of the first region.
Preferably, the distance between the knife entering point of the first area and the waterproof line is L, and the maximum depth of the first area is T; wherein L is more than or equal to 3mm and less than or equal to 5mm, and T is more than or equal to 5mm.
Preferably, the distance from any point of the contour line of the outer side of the tire to the contour line of the inner side of the tire in the horizontal direction of the tire cross section is the thickness of the tire; wherein the minimum thickness of the tire at the first area position is not less than the sidewall thickness at the horizontal axis position.
The application discloses a tire, which comprises: the tire comprises a tire tread layer, a waterproof line, a composite rubber core and a bead ring, wherein the tire tread layer is formed by connecting a liner layer, a tire body layer, a belt ply, a tire side and a tire crown which are sequentially arranged from inside to outside; the upper end of the hard triangular rubber core is attached to the inner side tire body and the outer side tire body, and the lower end of the hard triangular rubber core is attached to the outer side of the soft triangular rubber core and the outer side tire body; the inner side of the soft triangle rubber core is attached to the inner side of the tyre body; the lower end of the soft triangle rubber core is connected with the bead ring, the application well protects the tire body and the reverse wrapping end point of the steel wire wrapping cloth, so that the durability of the tire is not affected, the application reduces the rubber for the sidewall, reduces the rolling resistance of the tire, and improves the durability of the all-steel radial tire.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a tire sidewall prior to cutting in accordance with certain embodiments of the present application;
FIG. 2 is a schematic view of a tire sidewall cut structure according to some embodiments of the present application.
Reference numerals:
100. an inner liner layer;
200. a belt layer;
300. a sidewall;
400. a crown;
500. a tread layer;
600. a waterproof line;
700. a composite rubber core; 710. a hard delta rubber core; 720. a soft triangle rubber core;
800. a bead ring;
900. and (5) wrapping the steel wire.
Detailed Description
The following describes in further detail the embodiments of the present application with reference to the drawings and examples. The following examples are illustrative of the application and are not intended to limit the scope of the application.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
When the term "radial" is used, the expression relates to the radial direction of the tyre, and if it is closer to the rotation axis of the tyre, it is expressed as "radially inside"; when the term "circumferential" is used, it is expressed as the tire rolling direction; when the term "tire" is used, it is expressed as the side of the tire that is adjacent to the rim.
The following is a description of a preferred embodiment of the present application in connection with figures 1-2.
In order to solve the technical problems, the application discloses a tire, comprising: the inner liner 100, the carcass layer, the belt 200, the tire side 300 and the tire crown 400 which are sequentially arranged from inside to outside are connected to form the tread layer 500, the waterproof line 600, the composite rubber core 700 and the bead ring 800 are further included, one end of the carcass layer passes through the space between the outer side of the inner liner 100 and the inner side of the composite rubber core 700, the lower end of the composite rubber core 700 and the bead ring 800 are reversely wrapped by the carcass layer, the top end of the composite rubber core 700 is attached to the carcass layer, the tire side 300 is attached to the outer side of the carcass layer, a straight line passing through the widest point of the tire section is defined as a horizontal axis under the rated internal pressure inflation state, and a first area is formed along the outer surface of the tire side 300 in a mode of cutting part of materials of the tire side 300 from the horizontal axis to the waterproof line 600. The application well protects the tire body and the reverse wrapping end points of the steel wire wrapping cloth 900, so that the durability of the tire is not affected, and the application reduces the rubber used by the tire side 300, reduces the rolling resistance of the tire and improves the durability of the all-steel radial tire.
Preferably, the first region is arcuate in the tire cross-section, forming a portion of the contour of the tire cross-section sidewall 300.
Preferably, the first region includes a central portion, an upper transition portion formed by extending an upper end of the central portion in a horizontal axis direction, and a lower transition portion formed by extending a lower end of the central portion in a waterproof line 600 direction; the depth of the first region gradually increases from 0 to a value gradually decreases to 0 along the outer surface of the sidewall 300 from the horizontal axis to the waterproof line 600; the depth of the first region is larger as the depth of the first region is closer to the geometric center of the center part, and the position with the largest depth is the maximum value of the depth of the first region.
Preferably, the distance between the knife point of the first region and the waterproof line 600 is L, and the maximum depth of the first region is T; wherein L is more than or equal to 3mm and less than or equal to 5mm, and T is more than or equal to 5mm.
Preferably, the outer side of the carcass layer is reversely wrapped at the lower end of the composite rubber core 700, and is further wrapped with steel wire wrapping cloth 900.
It should be noted that, the present application ensures the stability of the tire by providing the wire wrap 900.
Preferably, the composite core 700 includes a hard apex 710 and a soft apex 720; the hard apex 710 is attached to the inner and outer sides of the carcass, the lower end of the hard apex 710 is attached to the outer side of the soft apex 720 and the outer side of the carcass, the inner side of the soft apex 720 is attached to the inner side of the carcass, and the lower end of the soft apex 720 is connected to the bead ring 800.
It should be noted that the present application is further provided with a cushion rubber, which is disposed at one side of the belt layer 200 and located at the shoulder, so as to increase the connection strength, and simultaneously ensure the stability of the tire and increase the density of the tire.
As a preferred scheme, the wire wrapping cloth 900 is arranged between the inner lining layer 100 and the carcass layer, one end of the wire wrapping cloth is reversely wrapped on the carcass layer along the reverse wrapping direction of the carcass layer from the lower part of the joint of the soft triangular rubber core 720 and the top end of the hard triangular rubber core 710, the other end of the wire wrapping cloth 900 passes through the joint of the hard triangular rubber core 710 and the bottom end of the soft triangular rubber core 720 and is attached to the hard triangular rubber core 720, and the reverse wrapping height of the wire wrapping cloth 900 is higher than the reverse wrapping height H of the carcass layer; wherein H is more than or equal to 8mm and less than or equal to 10mm.
The steel wire wrapping cloth 900 is arranged on the outer side of the tire body, the wrapping height of the steel wire wrapping cloth 900 is higher than the wrapping height H of the tire body layer, and H is more than or equal to 8mm and less than or equal to 10mm, so that the circumferential rigidity of the tire can be enhanced, and the steering stability of the tire is ensured.
As a preferred solution, the tire further includes a bead reinforcing rubber, two ends of the bead reinforcing rubber are respectively connected to the inner side of the bottom of the sidewall 300 and the inner side of the bottom of the liner 100, and the bead reinforcing rubber is completely coated on the outer side of the steel wire wrapping cloth 900, so as to protect the carcass layer and the anti-wrapping end point of the steel wire wrapping cloth 900.
Compared with the prior art, the bead reinforcing adhesive is unchanged, so that the tire body and the anti-wrapping end point of the steel wire wrapping cloth 900 are well protected, and the durability of the tire is not affected.
Preferably, the distance from any point of the contour line of the outer side of the tire to the contour line of the inner side of the tire in the horizontal direction is the thickness of the tire; wherein the minimum thickness of the tire at the first area location is not less than the thickness of the sidewall 300 at the horizontal axis location.
Further, referring to fig. 1-2, the cutting position of the present application is located above the reinforcing rubber of the bead 300, and the cutting of the bead 300 is performed, wherein the cutting of the bead 300 is distributed along the entire circumference of the circumference. It should be noted that the soft rubber of the sidewall 300 above the horizontal shaft is not cut, so that the tire body can be well protected, and the retreadability of the tire framework material is improved.
1-2, in some embodiments of the present application, a tire sidewall 300 is cut in such a manner that a straight line passing through a widest point of a tire cross section in a rated internal pressure inflated state is defined as a horizontal axis, from a position of the horizontal axis, a portion of material is cut off from the sidewall 300 along an outer surface of the sidewall 300 in a direction from the horizontal axis to a waterproof line 600, and a first region is formed along a whole circumference of a tire circumferential direction; among them, the process of cutting the sidewall 300 needs to ensure: cutting is started by taking the horizontal axis as a cutting-in point, and after the cutting depth gradually increases from 0 to the maximum value of the depth of the first area from the horizontal axis to the waterproof line 600, the cutting depth gradually decreases to 0 and simultaneously carries out cutting, the cutting depth in the cutting process is less than or equal to 5mm, the thickness of the thinnest point after cutting is not less than the thickness of the sidewall 300 at the horizontal axis position, and the distance from the cutting-out point to the waterproof line 600 is not less than 3mm and not more than 5mm.
The application discloses a tire, which comprises: the tire comprises a tire tread layer, a waterproof line, a composite rubber core and a bead ring, wherein the tire tread layer is formed by connecting a liner layer, a tire body layer, a belt ply, a tire side and a tire crown which are sequentially arranged from inside to outside; the upper end of the hard triangular rubber core is attached to the inner side tire body and the outer side tire body, and the lower end of the hard triangular rubber core is attached to the outer side of the soft triangular rubber core and the outer side tire body; the inner side of the soft triangle rubber core is attached to the inner side of the tyre body; the lower end of the soft triangle rubber core is connected with the bead ring, the application well protects the tire body and the reverse wrapping end point of the steel wire wrapping cloth, so that the durability of the tire is not affected, the application reduces the rubber for the sidewall, reduces the rolling resistance of the tire, and improves the durability of the all-steel radial tire.
The foregoing is merely a preferred embodiment of the present application, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present application, and these modifications and substitutions should also be considered as being within the scope of the present application.
Claims (5)
1. A tire, comprising: the tire comprises an inner liner, a tire body layer, a belt ply, a tire side, a tire tread formed by connecting a tire crown, a waterproof line, a composite rubber core and a bead ring, wherein the inner liner, the tire body layer, the belt ply, the tire side and the tire tread are sequentially arranged from inside to outside;
wherein a straight line passing through the widest point of the tire cross section in a inflated state at a rated internal pressure is defined as a horizontal axis, and a first region is formed along the outer surface of the sidewall by cutting a part of the material of the sidewall in the direction from the horizontal axis to the waterproof line; the outer side of the carcass layer is reversely wrapped at the lower end of the composite rubber core, and is also wrapped with steel wire wrapping cloth; the composite rubber core comprises a hard triangular rubber core and a soft triangular rubber core; the hard triangular rubber core is attached to the inner side and the outer side of the carcass, the lower end of the hard triangular rubber core is attached to the outer side of the soft triangular rubber core and the outer side of the carcass, the inner side of the soft triangular rubber core is attached to the inner side of the carcass, and the lower end of the soft triangular rubber core is connected with the bead ring; the steel wire wrapping cloth is arranged between the inner liner layer and the carcass layer, one end of the steel wire wrapping cloth is reversely wrapped on the carcass layer along the reverse wrapping direction of the carcass layer from the lower part of the joint of the soft triangular rubber core and the top end of the hard triangular rubber core, the other end of the steel wire wrapping cloth passes through the joint of the hard triangular rubber core and the bottom end of the soft triangular rubber core and is attached to the hard triangular rubber core, and the reverse wrapping height of the steel wire wrapping cloth is higher than the reverse wrapping height H of the carcass layer; wherein H is more than or equal to 8mm and less than or equal to 10mm; the tire further comprises a bead reinforcing adhesive, wherein two ends of the bead reinforcing adhesive are respectively connected with the inner side of the bottom of the tire side and the inner side of the bottom of the inner liner, and the bead reinforcing adhesive is completely coated on the outer side of the steel wire wrapping cloth and used for protecting the tire body layer and the anti-wrapping end points of the steel wire wrapping cloth.
2. The tire of claim 1 wherein said first region is arcuate in said tire section forming a portion of a sidewall contour of said tire section.
3. The tire of claim 1 wherein said first area includes a central portion, an upper transition portion formed by an upper end of the central portion extending in the direction of said horizontal axis, and a lower transition portion formed by a lower end of the central portion extending in the direction of said water-repellent line;
the depth of the first area gradually increases from 0 to a certain value and gradually decreases to 0 along the direction from the horizontal axis to the waterproof line of the outer surface of the sidewall;
the depth of the first region is larger as the depth of the first region is closer to the geometric center of the center part, and the position with the largest depth is the maximum value of the depth of the first region.
4. A tyre as claimed in claim 3, wherein the cutting is started from the position of the horizontal axis as the cutting point, and the cutting depth gradually increases from 0 to the maximum value of the depth of the first region from the horizontal axis to the waterproof line 600, and then gradually decreases to 0 and simultaneously the cutting is performed, wherein the distance from the cutting point of the first region to the waterproof line during the cutting is L, and the maximum value of the depth of the first region is T;
wherein L is more than or equal to 3mm and less than or equal to 5mm, and T is more than or equal to 5mm.
5. A tyre as claimed in anyone of claims 1 to 4 wherein said tyre section is horizontally spaced from said tyre outer side contour by a distance of the tyre thickness from said tyre inner side contour; wherein the minimum thickness of the tire at the first area position is not less than the sidewall thickness at the horizontal axis position.
Priority Applications (1)
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CN202110128949.XA CN112848808B (en) | 2021-01-29 | 2021-01-29 | Tire with a tire cover |
Applications Claiming Priority (1)
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CN202110128949.XA CN112848808B (en) | 2021-01-29 | 2021-01-29 | Tire with a tire cover |
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CN112848808A CN112848808A (en) | 2021-05-28 |
CN112848808B true CN112848808B (en) | 2023-09-29 |
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CN202110128949.XA Active CN112848808B (en) | 2021-01-29 | 2021-01-29 | Tire with a tire cover |
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JPH09175122A (en) * | 1995-12-22 | 1997-07-08 | Bridgestone Corp | Pneumatic radial tire |
JPH10193924A (en) * | 1997-01-09 | 1998-07-28 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
KR100821550B1 (en) * | 2006-12-28 | 2008-04-15 | 금호타이어 주식회사 | The heavy-duty pneumatic radial tire improving the durability of the bead section |
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CN103754070A (en) * | 2014-01-07 | 2014-04-30 | 中策橡胶集团有限公司 | All-steel radial tyre for tyre bead external reinforcement as well as preparation method thereof |
CN103754071A (en) * | 2014-01-08 | 2014-04-30 | 中策橡胶集团有限公司 | All-steel radial tyre with reinforced tyre ring interior and preparation method thereof |
CN104669952A (en) * | 2015-03-09 | 2015-06-03 | 山东玲珑轮胎股份有限公司 | All-steel radial heavy-duty tire |
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CN107685602A (en) * | 2017-09-14 | 2018-02-13 | 中策橡胶集团有限公司 | A kind of all-steel radial tyre with high bead durability energy |
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