JPH07144513A - Pneumatic tire for off-road travel - Google Patents

Pneumatic tire for off-road travel

Info

Publication number
JPH07144513A
JPH07144513A JP5316049A JP31604993A JPH07144513A JP H07144513 A JPH07144513 A JP H07144513A JP 5316049 A JP5316049 A JP 5316049A JP 31604993 A JP31604993 A JP 31604993A JP H07144513 A JPH07144513 A JP H07144513A
Authority
JP
Japan
Prior art keywords
tire
carcass
sidewall
side wall
thickness
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5316049A
Other languages
Japanese (ja)
Other versions
JP3349229B2 (en
Inventor
Yujiro Yoshida
雄次郎 吉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Rubber Industries Ltd
Original Assignee
Sumitomo Rubber Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Rubber Industries Ltd filed Critical Sumitomo Rubber Industries Ltd
Priority to JP31604993A priority Critical patent/JP3349229B2/en
Publication of JPH07144513A publication Critical patent/JPH07144513A/en
Application granted granted Critical
Publication of JP3349229B2 publication Critical patent/JP3349229B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To improve the cutting resistance of a side wall part and suppress the increase of weight by disposing a protecting layer with a reinforcing rubber layer of specified hardness interposed in the specified position of the side wall part, and forming this protecting layer of a specified reinforcing ply. CONSTITUTION:A side wall part 3 is provided with a protecting layer 10 with a reinforcing rubber layer 9 interposed on the outside in the tire radial direction of a carcass 6 from a buttress part 8 on the outside in the radial direction to a position going radially inward over the maximum width position 13 of the maximum width W of the side wall part 3. This protecting layer 10 is formed of at least one reinforcing ply 11 with organic fiber cords inclined by 45-75 deg. to the circumferential direction of a tire 1. The reinforcing rubber layer 9 has a JISA hardness of 56-63 deg. and has a thickness 0,24-0.55 times as thick as the thickness of side wall rubber in the maximum width position 13. The weight increase of the tire can be thereby suppressed while improving the cutting-through resistance of the side wall part 3.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はサイドウォール部の耐カ
ット貫通性を向上させつつタイヤ重量の増大を抑制しう
る不整地走行用空気入りタイヤに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic tire for traveling on rough terrain, which can improve the cut penetration resistance of a sidewall portion and suppress an increase in tire weight.

【0002】[0002]

【従来の技術】近年、レジャーの多様化等により、オフ
ロード等の不整地を積極的に走破しうるRV車の需要が
高まりつつあるが、この種の車両のタイヤにあっては、
路面から***する鋭利な岩、石等によってバットレス部
からサイドウォール部に至ってカット等の損傷を受けや
すい。
2. Description of the Related Art In recent years, due to diversification of leisure and the like, demand for RV vehicles capable of actively driving over rough terrain such as off-road is increasing.
Sharp rocks, stones, etc. that rise up from the road surface are prone to damage such as cuts from the buttress portion to the sidewall portion.

【0003】かかる問題を解決すべく本件出願人は、特
開平4−163215号公報に示される空気入りタイヤ
を提案している。
In order to solve such a problem, the applicant of the present invention has proposed a pneumatic tire disclosed in Japanese Patent Laid-Open No. 4-163215.

【0004】この空気入りタイヤは、図4に示すごと
く、サイドウォール部Aに沿いかつカーカスB外方に所
定の角度で保護コードを配列した補強プライからなる保
護層Cを設け、耐カット貫通性を高めたものである。
As shown in FIG. 4, this pneumatic tire is provided with a protective layer C made of a reinforcing ply along the side wall portion A and outside the carcass B at a predetermined angle, and has a cut penetration resistance. It is a heightened one.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、かかる
従来の構成では、カットが保護層Cを貫通しうる程深い
場合、タイヤの繰り返し変形によってカットが保護層C
の内方に位置するコーティングゴムD内を比較的早期に
成長してカーカスBにまで達するため、耐カット貫通性
を幾分かは高めるものの、その効果は十分ではなかっ
た。
However, in such a conventional configuration, when the cut is deep enough to penetrate the protective layer C, the cut causes the protective layer C to be repeatedly deformed by repeated deformation of the tire.
Since the inside of the coating rubber D located at the inside of the rubber grows relatively early to reach the carcass B, the cut penetration resistance is somewhat increased, but the effect is not sufficient.

【0006】又、カーカスBと保護層Cとの間のコーテ
ィングゴムDの肉厚を大としてカットの成長を遅らせる
ことも考えられるが、かかる方法ではタイヤ重量が大幅
に増加して車両の燃費を悪化させる。
It is also conceivable that the thickness of the coating rubber D between the carcass B and the protective layer C is increased to delay the growth of the cut, but such a method significantly increases the weight of the tire and reduces the fuel consumption of the vehicle. make worse.

【0007】本発明は、以上のような問題点に鑑み案出
されたもので、サイドウォール部の耐カット性を向上さ
せつつタイヤ重量の増大を抑制しうる不整地走行用空気
入りタイヤを提供することを目的としている。
The present invention has been devised in view of the above problems, and provides a pneumatic tire for traveling on rough terrain, which can suppress the increase in tire weight while improving the cut resistance of the sidewall portion. The purpose is to do.

【0008】[0008]

【課題を解決するための手段】本発明は、トレッド部か
らサイドウォール部を通りビード部のビードコアの廻り
でタイヤの内側から外側に折返されるカーカスと、トレ
ッド部の内方かつカーカスの外側に配されるベルト層と
を有する不整地走行用空気入りタイヤであって、前記サ
イドウォール部にその半径方向外方のバットレス部から
このサイドウォール部の最大幅位置を半径方向内方にこ
える位置までの範囲に亘り、前記カーカスのタイヤ軸方
向の外側で延在しかつ前記カーカスとの間に補強ゴム層
を介在させた保護層を配するとともに、該保護層は有機
繊維からなるコードをタイヤ円周方向に対して45度以
上かつ75度以下の角度で傾けた少なくとも一枚の補強
プライからなり、かつ前記補強ゴム層は、JISA硬度
が56°〜63°、厚さがサイドウォール部の最大幅位
置でのサイドウォールゴム厚さの0.25倍〜0.55
倍であることを特徴とする不整地走行用空気入りタイヤ
である。
The present invention is directed to a carcass which is folded from the inside of the tire to the outside around the bead core of the bead part, passing through the sidewall part from the tread part, and inside the tread part and outside the carcass. A pneumatic tire for running on rough terrain having a belt layer arranged, wherein the sidewall portion has a maximum width position of the sidewall portion extending radially inward from a buttress portion radially outward of the sidewall portion. A protective layer extending outside the carcass in the axial direction of the tire and having a reinforcing rubber layer interposed between the carcass, and the protective layer includes a cord made of an organic fiber. The reinforcing rubber layer comprises at least one reinforcing ply inclined at an angle of 45 degrees or more and 75 degrees or less with respect to the circumferential direction, and the reinforcing rubber layer has a JIS A hardness of 56 ° to 63 °, The thickness is 0.25 to 0.55 times the thickness of the sidewall rubber at the maximum width position of the sidewall portion.
It is a pneumatic tire for running on rough terrain, which is doubled in length.

【0009】[0009]

【作用】本発明によれば、カットが保護層を貫通しうる
程深い場合でも、保護層とカーカスとの間にはJISA
硬度が56°〜63°からなる補強ゴム層を介在させて
いるため剛性の差による保護層とカーカスとの間のセパ
レーションを防止しつつカットがカーカスまで早期に成
長するのを防止でき耐カット性を向上しうる。
According to the present invention, even if the cut is deep enough to penetrate the protective layer, there is a JISA between the protective layer and the carcass.
Since a reinforcing rubber layer with a hardness of 56 ° to 63 ° is interposed, the separation between the protective layer and the carcass due to the difference in rigidity can be prevented, and the cut can be prevented from growing to the carcass early and the cut resistance can be improved. Can be improved.

【0010】又、前記補強ゴム層の厚さをサイドウォー
ル部の最大幅位置でのサイドウォールゴム厚さの0.2
5倍乃至0.55倍、即ちサイドウォール部の最大幅位
置でのサイドウォールゴム厚さを2乃至4mmとした場合
には、前記補強ゴム層の厚さは0.5乃至2.2mmに規
制しうる結果、薄肉化を実現でき、タイヤ重量の著しい
増加を抑制して車両の燃費を節減しうる。
Further, the thickness of the reinforcing rubber layer is set to 0.2 of the thickness of the sidewall rubber at the maximum width position of the sidewall portion.
5 times to 0.55 times, that is, when the thickness of the sidewall rubber at the maximum width position of the sidewall portion is 2 to 4 mm, the thickness of the reinforcing rubber layer is regulated to 0.5 to 2.2 mm. As a result, it is possible to reduce the wall thickness, suppress a significant increase in tire weight, and reduce fuel consumption of the vehicle.

【0011】[0011]

【実施例】以下本発明の一実施例を図面に基づき説明す
る。図1に示すごとく、不整地走行用空気入りタイヤ1
は、トレッド部2からサイドウォール部3を通りビード
部4のビードコア5の廻りでタイヤの内側から外側に折
返されるカーカス6と、該カーカス6の外側に配された
ベルト層7と保護層10とから構成される。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a pneumatic tire 1 for traveling on rough terrain
Is a carcass 6 which is folded from the inside of the tire to the outside around the bead core 5 of the bead portion 4 passing from the tread portion 2 to the sidewall portion 3, and the belt layer 7 and the protective layer 10 arranged outside the carcass 6. Composed of and.

【0012】前記カーカス6は、カーカスコードをタイ
ヤ赤道に対して90度傾けて配列したラジアル構造のも
のを例示している。又カーカス6の本体部6A及びその
両端の折返し部6Bの間には硬質ゴムからなりかつ前記
ビードコア5から半径方向外方に立ち上がるビードエー
ペックスを配して前記ビード部4を補強している。
The carcass 6 exemplifies a carcass cord having a radial structure in which the carcass cords are arranged at an angle of 90 degrees with respect to the tire equator. A bead apex which is made of hard rubber and stands radially outward from the bead core 5 is provided between the body portion 6A of the carcass 6 and the folded portions 6B at both ends to reinforce the bead portion 4.

【0013】前記ベルト層7はトレッド部2の内方かつ
カーカス6の外側に、本例では2層のベルトプライ1
2、13を配してトレッド部2を補強している。
The belt layer 7 is provided inside the tread portion 2 and outside the carcass 6, that is, in the present embodiment, a two-layer belt ply 1.
2 and 13 are arranged to reinforce the tread portion 2.

【0014】又トレッド部2には前記ベルト層7の外側
にトレッドゴム14が配される。トレッドゴムは、本実
施例では、硬さがJISA硬度の60〜66°である比
較的硬いゴムによって構成される。
In the tread portion 2, a tread rubber 14 is arranged outside the belt layer 7. In this embodiment, the tread rubber is made of a relatively hard rubber having a hardness of 60 to 66 ° of JISA hardness.

【0015】前記保護層10は、サイドウォール部3
に、その半径方向外方のバットレス部8から、前記サイ
ドウォール部3の最大幅Wをなす最大幅位置13を半径
方向内方に超える位置に亘り前記カーカス6のタイヤ軸
方向外側に補強ゴム層9を介在させて配している。
The protective layer 10 has a sidewall portion 3
Further, a reinforcing rubber layer is provided on the tire axially outer side of the carcass 6 from the buttress portion 8 outwardly in the radial direction thereof to a position radially inwardly exceeding the maximum width position 13 forming the maximum width W of the sidewall portion 3. 9 are arranged.

【0016】又保護層10は、芳香族ポリアミド、ナイ
ロン、レーヨン、ポリエステル等の有機繊維コードをタ
イヤ円周方向に対して45度以上かつ75度以下の角度
で傾けた少なくとも1枚の補強プライ11から構成され
る。
The protective layer 10 is composed of at least one reinforcing ply 11 in which an organic fiber cord made of aromatic polyamide, nylon, rayon, polyester or the like is inclined at an angle of 45 degrees or more and 75 degrees or less with respect to the tire circumferential direction. Composed of.

【0017】なおサイドウォール部3は、前記保護層の
外側にサイドウォールゴム15が配され、本実施例で
は、前記トレッド部2のトレッドゴム14よりも低い硬
度のゴム、より詳しくはJISA硬度が53°〜59°
のもので構成される。
The sidewall portion 3 is provided with a sidewall rubber 15 on the outer side of the protective layer. In this embodiment, the sidewall rubber 3 has a hardness lower than that of the tread rubber 14 of the tread portion 2, more specifically, a JIS A hardness. 53 ° to 59 °
Composed of.

【0018】前記補強ゴム層9は、JISA硬度が56
°以上かつ63°以下からなり、その厚さは前記サイド
ウォール部3の最大幅位置13でのサイドウォールゴム
厚さの0.25倍〜0.55倍としている。尚サイドウ
ォール部の最大幅位置におけるサイドウォールゴム15
の厚さは、好ましくは2mm乃至4mmである。
The reinforcing rubber layer 9 has a JIS A hardness of 56.
It is not less than 0 ° and not more than 63 °, and its thickness is 0.25 to 0.55 times the thickness of the sidewall rubber at the maximum width position 13 of the sidewall portion 3. In addition, the sidewall rubber 15 at the maximum width position of the sidewall portion 15
Preferably has a thickness of 2 mm to 4 mm.

【0019】[0019]

【具体例】タイヤサイズが215SR15であり、かつ
図1に示す構成を有するタイヤ(実施例1〜3)につい
て試作するとともに、その性能についてテストした。な
お、保護層10を設けない従来構造のタイヤ(比較例
1)、保護層10は設けられるが、補強ゴム層9の厚さ
を前記サイドウォールゴム厚さの0.25〜0.55倍
の範囲外としたもの(比較例2)、についても併せてテ
ストを行い性能の比較を行った。
SPECIFIC EXAMPLE Tires (Examples 1 to 3) having a tire size of 215SR15 and having the structure shown in FIG. 1 were prototyped and their performances were tested. Although the tire having the conventional structure without the protective layer 10 (Comparative Example 1) and the protective layer 10 are provided, the thickness of the reinforcing rubber layer 9 is 0.25 to 0.55 times the thickness of the sidewall rubber. A test was also conducted for those outside the range (Comparative Example 2) to compare the performance.

【0020】イ)耐カット性 いわゆる振子式サイドウォール衝撃テストを行う。これ
は、図2に示すように、クサビ型の刃16を錘17に取
付けたものを振子18下端に設け、自由落下方式でタイ
ヤTのサイドウォール部に衝撃を与えるとともに、錘1
7と落下高さHとによりタイヤサイドウォールの破壊エ
ネルギーを求め評価するテストである。なお前記刃16
の刃先15Aは、図3(a)、(b)に示すように、先
端を円弧とした断面テーパ状の偏平体によって形成され
る。刃先16Aの長手方向を、タイヤ半径方向に平行と
したものと、タイヤ周方向に平行としたものとについて
評価し、夫々比較例1を100とする指数で表示した。
数値が大きいほどサイドウォール部の耐カット性が優れ
ていることを示す。
A) Cut resistance A so-called pendulum type sidewall impact test is conducted. As shown in FIG. 2, the weight 17 is attached with a wedge-shaped blade 16 at the lower end of the pendulum 18, and the sidewall of the tire T is impacted by the free fall method.
This is a test for obtaining and evaluating the breaking energy of the tire sidewall by using 7 and the drop height H. The blade 16
As shown in FIGS. 3 (a) and 3 (b), the blade edge 15A is formed by a flat body having a tapered cross-section with an arc tip. The longitudinal direction of the cutting edge 16A was evaluated parallel to the tire radial direction and parallel to the tire circumferential direction, and the index was set to 100 for Comparative Example 1, respectively.
The larger the value, the better the cut resistance of the sidewall portion.

【0021】ロ)タイヤ重量 比較例1のタイヤ重量を100とする指数で表示した。
数値が大きいほどタイヤ重量が増加していることを示
す。
B) Tire weight The tire weight of Comparative Example 1 is shown as an index with 100 being the weight.
The larger the value is, the heavier the tire weight is.

【0022】ハ)耐久性 JISD4230の5.3項に規定する試験を行い、そ
のテスト結果を、比較例1を100とする指数で表示し
た。数値が大きいほど良好である。
C) Durability The test prescribed in JIS D4230, Section 5.3 was conducted, and the test result was expressed as an index with Comparative Example 1 being 100. The larger the value, the better.

【0023】テストの結果を表1に示す。The test results are shown in Table 1.

【0024】[0024]

【表1】 [Table 1]

【0025】テストの結果、実施例のものは比較例のも
のに比べてタイヤ重量の増加を抑制しつつ耐カット性を
向上していることを確認した。尚、補強ゴム層9の厚さ
をサイドウォールゴム厚さの0.25〜0.55倍の範
囲外より具体的には0.174倍とした比較例2のタイ
ヤでは、耐カット性は向上しうるものの、補強ゴム層の
薄肉化により保護層とカーカスとの間でセパレーション
が生じ耐久性が著しく低下した。
As a result of the test, it was confirmed that the tires of Examples have improved cut resistance while suppressing an increase in tire weight, as compared with the tires of Comparative Examples. In addition, in the tire of Comparative Example 2 in which the thickness of the reinforcing rubber layer 9 is more than 0.25 to 0.55 times the thickness of the sidewall rubber, specifically 0.174 times, the cut resistance is improved. However, due to the thinning of the reinforcing rubber layer, separation occurred between the protective layer and the carcass, resulting in a marked decrease in durability.

【0026】[0026]

【発明の効果】叙上の如く、本発明によれば、サイドウ
ォール部の耐カット貫通性を向上させつつタイヤ重量の
増大を抑制しうる。
As described above, according to the present invention, an increase in tire weight can be suppressed while improving the cut penetration resistance of the sidewall portion.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例を示す不整地走行用空気入り
タイヤの子午断面図である。
FIG. 1 is a meridional cross-sectional view of a pneumatic tire for running on uneven terrain according to an embodiment of the present invention.

【図2】耐カット性のテスト方法を示す線図である。FIG. 2 is a diagram showing a method for testing cut resistance.

【図3】そのテスト方法に用いられる刃の形状を示し、
(a)は平面図、(b)は側面図である。
FIG. 3 shows the shape of a blade used in the test method,
(A) is a plan view and (b) is a side view.

【図4】従来の技術を説明する断面図である。FIG. 4 is a cross-sectional view illustrating a conventional technique.

【符号の説明】[Explanation of symbols]

1 不整地走行用空気入りタイヤ 2 トレッド部 3 サイドウォール部 4 ビード部 5 ビードコア 6 カーカス 7 ベルト層 8 バットレス部 9 補強ゴム層 10 保護層 11 補強プライ 12 ベルトプライ 14 トレッドゴム 15 サイドウォール部 1 Pneumatic tire for running on rough terrain 2 Tread part 3 Sidewall part 4 Bead part 5 Bead core 6 Carcass 7 Belt layer 8 Buttress part 9 Reinforcement rubber layer 10 Protective layer 11 Reinforcement ply 12 Belt ply 14 Tread rubber 15 Sidewall part

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】トレッド部からサイドウォール部を通りビ
ード部のビードコアの廻りでタイヤの内側から外側に折
返されるカーカスと、 トレッド部の内方かつカーカスの外側に配されるベルト
層とを有する不整地走行用空気入りタイヤであって、 前記サイドウォール部にその半径方向外方のバットレス
部からこのサイドウォール部の最大幅位置を半径方向内
方にこえる位置までの範囲に亘り、前記カーカスのタイ
ヤ軸方向の外側で延在しかつ前記カーカスとの間に補強
ゴム層を介在させた保護層を配するとともに、 該保護層は有機繊維からなるコードをタイヤ円周方向に
対して45度以上かつ75度以下の角度で傾けた少なく
とも一枚の補強プライからなり、 かつ前記補強ゴム層は、JISA硬度が56°〜63
°、厚さがサイドウォール部の最大幅位置でのサイドウ
ォールゴム厚さの0.25倍〜0.55倍であることを
特徴とする不整地走行用空気入りタイヤ。
1. A carcass that is folded back from the inside of the tire to the outside around the bead core of the bead portion, passing through the sidewall portion from the tread portion, and a belt layer disposed inside the tread portion and outside the carcass. A pneumatic tire for running on uneven terrain, ranging from the buttress portion radially outward to the sidewall portion to a position exceeding the maximum width position of this sidewall portion radially inward, of the carcass. A protective layer extending outside in the tire axial direction and having a reinforcing rubber layer interposed between the protective layer and the carcass is arranged, and the protective layer is a cord made of an organic fiber and is 45 degrees or more in the tire circumferential direction. And at least one reinforcing ply inclined at an angle of 75 degrees or less, and the reinforcing rubber layer has a JIS A hardness of 56 ° to 63 °.
The pneumatic tire for running on rough terrain, wherein the thickness is 0.25 to 0.55 times the thickness of the sidewall rubber at the maximum width position of the sidewall portion.
JP31604993A 1993-11-22 1993-11-22 Pneumatic tire for running on uneven terrain Expired - Fee Related JP3349229B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31604993A JP3349229B2 (en) 1993-11-22 1993-11-22 Pneumatic tire for running on uneven terrain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31604993A JP3349229B2 (en) 1993-11-22 1993-11-22 Pneumatic tire for running on uneven terrain

Publications (2)

Publication Number Publication Date
JPH07144513A true JPH07144513A (en) 1995-06-06
JP3349229B2 JP3349229B2 (en) 2002-11-20

Family

ID=18072701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31604993A Expired - Fee Related JP3349229B2 (en) 1993-11-22 1993-11-22 Pneumatic tire for running on uneven terrain

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Cited By (8)

* Cited by examiner, † Cited by third party
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KR20020074671A (en) * 2001-03-21 2002-10-04 금호산업 주식회사 Artificial Intelligent Type Tire
KR20030082081A (en) * 2002-04-16 2003-10-22 금호산업주식회사 A pneumatic tire that has an asymmetric body ply
KR100497980B1 (en) * 2002-11-04 2005-07-01 금호타이어 주식회사 Low rolling resistance tire for passenger car
JP2006160106A (en) * 2004-12-08 2006-06-22 Sumitomo Rubber Ind Ltd Pneumatic tire and its manufacturing method
WO2011065006A1 (en) * 2009-11-25 2011-06-03 株式会社ブリヂストン Air-filled radial tire for heavy loads
JP2011111003A (en) * 2009-11-25 2011-06-09 Bridgestone Corp Heavy-duty pneumatic radial tire
JP2020185843A (en) * 2019-05-13 2020-11-19 Toyo Tire株式会社 Pneumatic tire
WO2022158087A1 (en) * 2021-01-22 2022-07-28 株式会社ブリヂストン Pneumatic tire

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020074671A (en) * 2001-03-21 2002-10-04 금호산업 주식회사 Artificial Intelligent Type Tire
KR20030082081A (en) * 2002-04-16 2003-10-22 금호산업주식회사 A pneumatic tire that has an asymmetric body ply
KR100497980B1 (en) * 2002-11-04 2005-07-01 금호타이어 주식회사 Low rolling resistance tire for passenger car
JP2006160106A (en) * 2004-12-08 2006-06-22 Sumitomo Rubber Ind Ltd Pneumatic tire and its manufacturing method
JP4625319B2 (en) * 2004-12-08 2011-02-02 住友ゴム工業株式会社 Pneumatic tire and manufacturing method thereof
WO2011065006A1 (en) * 2009-11-25 2011-06-03 株式会社ブリヂストン Air-filled radial tire for heavy loads
JP2011111003A (en) * 2009-11-25 2011-06-09 Bridgestone Corp Heavy-duty pneumatic radial tire
AU2010323976B2 (en) * 2009-11-25 2013-11-14 Bridgestone Corporation Pneumatic radial tire for heavy loads
JP5639596B2 (en) * 2009-11-25 2014-12-10 株式会社ブリヂストン Heavy duty pneumatic radial tire
US9283812B2 (en) 2009-11-25 2016-03-15 Bridgestone Corporation Pneumatic radial tire for heavy loads
JP2020185843A (en) * 2019-05-13 2020-11-19 Toyo Tire株式会社 Pneumatic tire
WO2022158087A1 (en) * 2021-01-22 2022-07-28 株式会社ブリヂストン Pneumatic tire
EP4282667A4 (en) * 2021-01-22 2024-07-24 Bridgestone Corp Pneumatic tire

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