JPH0195912A - Pneumatic tire - Google Patents
Pneumatic tireInfo
- Publication number
- JPH0195912A JPH0195912A JP62253553A JP25355387A JPH0195912A JP H0195912 A JPH0195912 A JP H0195912A JP 62253553 A JP62253553 A JP 62253553A JP 25355387 A JP25355387 A JP 25355387A JP H0195912 A JPH0195912 A JP H0195912A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- width
- groove
- tread
- radial grooves
- 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
Links
- 230000002093 peripheral effect Effects 0.000 abstract 4
- 238000006073 displacement reaction Methods 0.000 abstract 2
- 230000000052 comparative effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000009194 climbing Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Tires In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、騒音を低減させると共に雪上走行性能を向上
させた空気入りタイヤに関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a pneumatic tire that reduces noise and improves snow running performance.
従来、オールシーズンタイヤの騒音低減策として、■ト
レッド表面のトレッドパターンにおけるブロックの大き
さ、すなわちタイヤ周方向の長さ（ピッチ）を種々変え
るピッチバリエーション法、■ラジアル溝（タイヤ幅方
向溝）のタイヤ幅方向に対する角度を大きくする法等が
用いられている（例えば、自動車研究隘８１００２ 、
参照）。Traditionally, as noise reduction measures for all-season tires, the following methods have been used: ■ Pitch variation method that varies the size of blocks in the tread pattern on the tread surface, that is, the length (pitch) in the circumferential direction of the tire; ■ Radial grooves (grooves in the width direction of the tire) Methods such as increasing the angle with respect to the tire width direction are used (for example, Automobile Research Center 81002,
reference).
しかし、これらの方法では、周方向中心線に対し左右点
対称となるパターンにおいては左右で溝の方向が同一と
なるため、溝に角度を付けた効果が半減したり、タイヤ
接地時の接地前端線の形状と溝角度が一致してしまい、
逆に騒音レベルが上昇してしまう等の欠点があった。ま
た、中心部周方向溝がジグザグでなく、直線であると雪
上走行性能が低下してしまう。However, with these methods, in a pattern that is symmetrical about the circumferential center line, the direction of the grooves is the same on the left and right sides, so the effect of angled grooves is halved, and the front edge of the tire contacts the ground. The shape of the line and the groove angle match,
On the contrary, there were drawbacks such as an increase in the noise level. Furthermore, if the center circumferential groove is straight rather than zigzag, the performance on snow will deteriorate.
本発明は、騒音の低減と雪上走行性能の向上とを同時に
達成せしめた空気入りタイヤを提供することを目的とす
る。このタイヤは、オールシーズンタイヤとして好適で
ある。SUMMARY OF THE INVENTION An object of the present invention is to provide a pneumatic tire that simultaneously reduces noise and improves snow running performance. This tire is suitable as an all-season tire.
このため、本発明は、トレッド表面にタイヤ幅方向に複
数のラジアル溝を設けると共にトレッド接地幅の中心部
付近にタイヤ周方向に環状に少なくとも１つのジグザグ
溝を設け、前記ラジアル溝をタイヤ幅方向に対し傾斜さ
せ、トレッド接地幅の中心に位置するタイヤ周方向中心
線を境として一方の側では全ラジアル溝の向きを同一と
し、他方の側では全ラジアル溝の向きを該一方の側のラ
ジアル溝の向きに対して逆方向とし、さらに、前記ジグ
ザグ溝の周方向中心線の幅方向ずれ量を該ジグザグ溝の
溝幅以上としたことを特徴とする空気入りタイヤを要旨
とする。For this reason, the present invention provides a plurality of radial grooves in the tire width direction on the tread surface, and also provides at least one zigzag groove annularly in the tire circumferential direction near the center of the tread ground contact width, and the radial grooves are arranged in the tire width direction. The direction of all radial grooves is the same on one side with respect to the tire circumferential center line located at the center of the tread contact width, and the direction of all radial grooves on the other side is the same as the radial direction of that one side. The gist of the present invention is a pneumatic tire characterized in that the direction is opposite to the direction of the grooves, and further, the amount of deviation in the width direction of the circumferential center line of the zigzag groove is greater than or equal to the groove width of the zigzag groove.
以下、本発明の構成につき詳しく説明する。Hereinafter, the configuration of the present invention will be explained in detail.
第１図は、本発明の空気入りタイヤのトレッド表面に形
成されたトレッドパターンの一例を示す説明図である。FIG. 1 is an explanatory diagram showing an example of a tread pattern formed on the tread surface of the pneumatic tire of the present invention.
第１図において、トレッド表面には複数のラジアル溝１
が設けられている。また、トレッド接地幅Ｔの中心部付
近には、タイヤ周方向ＥＥ’ に環状に少なくとも１つ
のジグザグ溝２が設けられている。In Figure 1, there are multiple radial grooves 1 on the tread surface.
is provided. Further, near the center of the tread ground contact width T, at least one zigzag groove 2 is provided annularly in the tire circumferential direction EE'.
（１１本発明では、ラジアル溝１をタイヤ幅方向ＦＦ’
に対し傾斜させ、トレッド接地幅Ｔの中心に位置する
タイヤ周方向中心線ｍを境として一方の側では全ラジア
ル溝の向きを同一とし、他方の側では全ラジアル溝の向
きを該一方の側のラジアル溝の向きに対して逆方向とし
ている。(11 In the present invention, the radial groove 1 is
The direction of all the radial grooves is the same on one side with respect to the tire circumferential center line m located at the center of the tread ground contact width T, and the direction of all the radial grooves is the same on the other side. The direction is opposite to that of the radial groove.
このように、ラジアル溝１を傾斜させると共にタイヤ周
方向中心線ｍを境としてラジアル？ｓ１を線対称とし、
いわゆる方向性パターンとしたのは、騒音の低減のため
である。In this way, the radial groove 1 is inclined, and the radial groove 1 is tilted, and the radial groove 1 is tilted, and the radial groove Let s1 be line symmetric,
The so-called directional pattern is used to reduce noise.
ラジアル溝１は、連続した曲線溝や直線溝、さらにはジ
グザグ溝の形態にあってもよい。The radial groove 1 may be in the form of a continuous curved groove, a straight groove, or even a zigzag groove.
ラジアル溝１のタイヤ幅方向ＦＦ’ に対する角度は、
タイヤ側面からタイヤ周方向中心線ｍに向かって順次変
化していてもよく、また、タイヤ周方向中心線ｍの左右
で同じでなくてもよい、すなわち、ラジアル溝１は、タ
イヤ周方向中心線ｍに対し厳密に幾何学的に線対称であ
る必要はなく、ずれていてもよい、ブロック３には、カ
ーフ４を刻設してもよい。The angle of the radial groove 1 with respect to the tire width direction FF' is:
The radial grooves 1 may change sequentially from the tire side surface toward the tire circumferential center line m, and may not be the same on the left and right sides of the tire circumferential center line m. A kerf 4 may be carved in the block 3, which does not need to be strictly geometrically symmetrical with respect to m and may be offset.
（２） さらに、本発明では、ジグザグ溝２の周方向
中心線１．ｌ’ の幅方向ずれ量ｄ、すなわちポイント
ハイド量をジグザグ溝２の溝幅以上としている。(2) Furthermore, in the present invention, the circumferential center line 1 of the zigzag groove 2. The widthwise deviation amount d of l', that is, the point hide amount is set to be greater than or equal to the groove width of the zigzag groove 2.
ジグザグ溝２を直線溝とせずにジグザグ形状としたのは
、雪柱せん断力を有効に発揮させ、乾燥路走行性能を低
下させることな（雪上走行性能を向上させるためである
。また、ポイントハイド量をジグザグ溝２の溝幅以上と
したのは、溝幅未満であるとジグザグ溝２により生じる
雪柱せん新開性が十分でなく、雪上走行性能の向上が望
めないからである。The reason why the zigzag groove 2 is made into a zigzag shape instead of a straight groove is to effectively exert the shearing force of the snow column and prevent the dry road running performance from deteriorating (to improve the snow running performance. The reason why the amount is set to be equal to or larger than the groove width of the zigzag groove 2 is because if it is less than the groove width, the snow pillar new opening produced by the zigzag groove 2 will not be sufficient, and no improvement in running performance on snow can be expected.
第２図に、第１図に示すトレッドパターンを有する空気
入りタイヤを全体的に示す、タイヤを車両に装着する場
合に、回転方向Ｍに７字型となるように方向性パターン
を合わせる。この逆に装着すると、走行騒音が悪化する
。FIG. 2 generally shows a pneumatic tire having the tread pattern shown in FIG. 1. When the tire is mounted on a vehicle, the directional pattern is adjusted to form a figure 7 shape in the rotational direction M. If installed in the opposite direction, the running noise will worsen.
以下に実施例を示す
実施例
（ａｌ 以下の本発明タイヤ、比較タイヤ１、比較タ
イヤ２につき、雪上登板性能、雪上路操縦安定性、およ
び乾燥路操縦安定性を評価した。この結果を指数で下記
表１に示す。Examples shown below (al) The following inventive tires, Comparative Tire 1, and Comparative Tire 2 were evaluated for climbing performance on snow, steering stability on snow, and steering stability on dry roads.The results were expressed as an index. It is shown in Table 1 below.
■ 本発明タイヤ。■ Tire of the present invention.
タイヤサイズ１９５／６０ ＶＲ１４゜第１図に示すト
レッドパターンを有する。Tire size: 195/60, VR: 14°, and has the tread pattern shown in Figure 1.
■ 比較タイヤ１゜
タイヤサイズ１９５／６０ ＶＲ１４゜第３図に示すト
レッドパターンを有する。タイヤ周方向に環状に設けた
主溝５が直線溝であり、ジグザグ溝でないことを除いて
第１図と同様。■ Comparison Tire 1° Tire size 195/60 VR14° It has the tread pattern shown in Figure 3. The same as in FIG. 1 except that the main groove 5 provided annularly in the circumferential direction of the tire is a straight groove and not a zigzag groove.
■ 比較タイヤ２゜
タイヤサイズ１９５／６０ ＶＲ１４、第４図に示すト
レッドパターンを有する。タイヤ周方向中心線ｍを境と
して一方の側における全ラジアル溝の向きと、他方の側
における全ラジアル溝の向きとが同一であることを除い
て第１図と同様。■ Comparison Tire 2° tire size 195/60 VR14, with the tread pattern shown in Figure 4. Same as FIG. 1 except that the direction of all the radial grooves on one side of the tire circumferential center line m is the same as the direction of all the radial grooves on the other side.
上 の量・ 法ニ
一定勾配の積雪登板路に一定距離の測定区間（２００ｍ
）を設け、初速２０ ｋｍ／ｈでスタートし、この測定
区間を全開で走行したときにかかった所要時間を平均時
間に換算して評価する。本発明タイヤを１００とした場
合の指数で示した。数値が大きい方がよい。A measurement section of a certain distance (200 m
), start at an initial speed of 20 km/h, and evaluate by converting the time required when driving at full throttle through this measurement section into an average time. It is shown as an index when the tire of the present invention is set as 100. The higher the number, the better.
畳上 ° 〜 のｉ・ 法：
積雪した屈曲、勾配を含む山岳路に一定距離（２ｋｍ）
の評価区間を設け、そこを走行するときの車両の運動性
能をフィーリングで１０点法で評価する。これを複数の
テストドライバーによる平均値で行う。本発明タイヤを
１００とした場合の指数で示した。数値が大きい方がよ
い。Tatami-ue ° ~ i・ method: A certain distance (2 km) on a snow-covered mountain road that includes bends and slopes.
A 10-point scale is used to evaluate the vehicle's driving performance based on feeling when driving through the evaluation section. This is done using the average value from multiple test drivers. It is shown as an index when the tire of the present invention is set as 100. The higher the number, the better.
免羞ａＬ性：
乾燥舗装路においてコーナリング走行し、このときの車
両、の運動性能をフィーリングで１０点法で評価する。Fear-free aL: The vehicle is cornered on a dry paved road, and the driving performance of the vehicle at this time is evaluated based on feeling on a 10-point scale.
これを複数のテストドライバーによる平均値で行う０本
発明タイヤを１００とした場合の指数で示した。数値が
大きい方がよい。This is expressed as an index based on the average value obtained by a plurality of test drivers, with 0 being the tire of the present invention being 100. The higher the number, the better.
ｌ土
本発明夕 比較タイ 比較タイ
イヤ ヤｌ ヤ２
雪上登板
性能 １００ ９２ ９Ｂ雪上路操
縦
安定性 １？）０ ９０ ９５乾燥路
操縦
安定性 １００ １００ ９８表１か
ら、本発明タイヤが雪上登板性能、雪上路操縦安定性、
および乾燥路操縦安定性のいずれにおいても優れている
ことが判る。Comparative Thailand Comparative tire tires Yal Ya2 Snow pitching performance 100 92 9B Snow road handling stability 1? ) 0 90 95 Dry road handling stability 100 100 98 From Table 1, it can be seen that the tire of the present invention has excellent snow climbing performance, snow road handling stability,
It can be seen that it is excellent in both dry road handling stability and dry road handling stability.
（ｂ）上記の本発明タイヤ、比較タイヤ１、比較タイヤ
２につき、騒音レベルを評価した。(b) The noise level of the above-mentioned present invention tire, Comparative Tire 1, and Comparative Tire 2 was evaluated.
この結果を第５図に示す。第５図において、ａは本発明
タイヤを、ｂは比較タイヤｌを、 ４Ｃは比較タイヤ
２をそれぞれ表わす。The results are shown in FIG. In FIG. 5, a represents the tire of the present invention, b represents the comparative tire 1, and 4C represents the comparative tire 2.
立レベルの量・ 法：
ＪＡＳＯＣ６０６−８１に規定されたタイヤ騒音試験法
の単体台上試験に準拠し、直径３ｍのドラム上にタイヤ
を押しつけ、荷重をかけた状態で速度３０＝１１０ ｋ
ｍ／ｈで走行するときに発生する騒音をマイクロホンに
より測定する。Vertical level amount/method: In accordance with the single bench test of the tire noise test method specified in JASOC606-81, the tire was pressed onto a drum with a diameter of 3 m and the load was applied at a speed of 30 = 110 k.
The noise generated when traveling at m/h is measured using a microphone.
第５図から、本発明タイヤは騒音レベルにおいて比較タ
イヤ１とほぼ同等レベルにあることが判る。From FIG. 5, it can be seen that the noise level of the tire of the present invention is approximately the same as that of Comparative Tire 1.
したがって、本発明タイヤは、雪上登板性能、雪上路操
縦安定性、乾燥路操縦安定性、および騒音レベルに総合
的に優れていることが判る。Therefore, it can be seen that the tire of the present invention is comprehensively superior in snow climbing performance, snow road handling stability, dry road handling stability, and noise level.
以上説明したように本発明によれば、乾燥路走行性能を
低下させることなく雪上走行性能を向上させ、さらに騒
音を低減させることができる。As explained above, according to the present invention, it is possible to improve driving performance on snow and further reduce noise without reducing dry road driving performance.
第１図は本発明の空気入りタイヤのトレッド表面に形成
されたトレッドパターンの一例を示す説明図、第２図は
第１図に示すトレッドパターンを有する空気入りタイヤ
の全体的斜視説明図、第３図および第４図は比較のため
のトレッドパターンを示す説明図、第５図は走行速度と
騒音レベルとの関係図である。
１・・・ラジアル溝、２・・・ジグザグ溝、３・・・ブ
ロック、４・・・カーフ、５・・・主溝、ｍ・・・タイ
ヤ周方向中心線。
代理人 弁理士 小 川 信 −FIG. 1 is an explanatory diagram showing an example of a tread pattern formed on the tread surface of a pneumatic tire of the present invention, FIG. 2 is an overall perspective explanatory diagram of a pneumatic tire having the tread pattern shown in FIG. 3 and 4 are explanatory diagrams showing tread patterns for comparison, and FIG. 5 is a diagram showing the relationship between running speed and noise level. 1... Radial groove, 2... Zigzag groove, 3... Block, 4... Kerf, 5... Main groove, m... Tire circumferential center line. Agent Patent Attorney Nobuo Ogawa −
Claims (1)
ると共にトレッド接地幅の中心部付近にタイヤ周方向に
環状に少なくとも１つのジグザグ溝を設け、前記ラジア
ル溝をタイヤ幅方向に対し傾斜させ、トレッド接地幅の
中心に位置するタイヤ周方向中心線を境として一方の側
では全ラジアル溝の向きを同一とし、他方の側では全ラ
ジアル溝の向きを該一方の側のラジアル溝の向きに対し
て逆方向とし、さらに、前記ジグザグ溝の周方向中心線
の幅方向ずれ量を該ジグザグ溝の溝幅以上としたことを
特徴とする空気入りタイヤ。A plurality of radial grooves are provided on the tread surface in the tire width direction, and at least one zigzag groove is provided annularly in the tire circumferential direction near the center of the tread contact width, and the radial grooves are inclined with respect to the tire width direction to improve tread contact. The direction of all radial grooves is the same on one side of the tire circumferential center line located at the center of the width, and the direction of all radial grooves on the other side is opposite to the direction of the radial grooves on that one side. 2. A pneumatic tire, wherein the zigzag groove has a circumferential center line and a widthwise deviation amount of the zigzag groove is greater than or equal to the groove width of the zigzag groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62253553A JP2668366B2 (en) | 1987-10-09 | 1987-10-09 | Pneumatic tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62253553A JP2668366B2 (en) | 1987-10-09 | 1987-10-09 | Pneumatic tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0195912A true JPH0195912A (en) | 1989-04-14 |
| JP2668366B2 JP2668366B2 (en) | 1997-10-27 |
Family
ID=17252967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62253553A Expired - Fee Related JP2668366B2 (en) | 1987-10-09 | 1987-10-09 | Pneumatic tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2668366B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5137068A (en) * | 1989-04-13 | 1992-08-11 | Semperit Reifen Ag | Radial-ply tire for trucks with tread blocks divided into two parallelogram-shaped parts |
| US5287905A (en) * | 1990-05-14 | 1994-02-22 | Pirelli Coordinamento Pneumatici S.P.A. | Tread for a motor vehicle tire |
| JPH0633706U (en) * | 1992-10-05 | 1994-05-06 | ザ・グッドイヤー・タイヤ・アンド・ラバー・カンパニー | Pneumatic tire |
| US6026874A (en) * | 1992-11-13 | 2000-02-22 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire having circumferential groove |
| JP2003054222A (en) * | 2001-08-20 | 2003-02-26 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| US6533007B1 (en) * | 2000-03-02 | 2003-03-18 | Mcmannis Lee A. | Tire having sidewall extensions at opposite ends of each tread element |
| US7246644B2 (en) * | 2001-02-28 | 2007-07-24 | Pirelli Pneumatici S.P.A. | Tyre for a vehicle wheel including specific tread patterns |
| US7270163B2 (en) * | 2001-02-28 | 2007-09-18 | Pirelli Pneumatici S.P.A. | Tyre for a vehicle wheel including specific tread patterns |
| CN105539018A (en) * | 2015-12-22 | 2016-05-04 | 赛轮金宇集团股份有限公司 | Steel disc for truck and bus tires and tire manufactured by using the same |
| US20180022163A1 (en) * | 2015-02-27 | 2018-01-25 | Compagnie Generale Des Etablissements Michelin | Tire With A Directional Tread Comprising Curved Blocks With Incisions |
| US11298980B2 (en) * | 2015-02-27 | 2022-04-12 | Compagnie Generale Des Etablissements Michelin | Tire with a directional tread comprising curved blocks with chamfers |
| US20220410636A1 (en) * | 2019-11-27 | 2022-12-29 | Compagnie Generale Des Etablissements Michelin | A tread for improving snow performance |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6985895B2 (en) * | 2017-11-08 | 2021-12-22 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Pneumatic tires |
-
1987
- 1987-10-09 JP JP62253553A patent/JP2668366B2/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5137068A (en) * | 1989-04-13 | 1992-08-11 | Semperit Reifen Ag | Radial-ply tire for trucks with tread blocks divided into two parallelogram-shaped parts |
| US5287905A (en) * | 1990-05-14 | 1994-02-22 | Pirelli Coordinamento Pneumatici S.P.A. | Tread for a motor vehicle tire |
| JPH0633706U (en) * | 1992-10-05 | 1994-05-06 | ザ・グッドイヤー・タイヤ・アンド・ラバー・カンパニー | Pneumatic tire |
| US6026874A (en) * | 1992-11-13 | 2000-02-22 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire having circumferential groove |
| US6533007B1 (en) * | 2000-03-02 | 2003-03-18 | Mcmannis Lee A. | Tire having sidewall extensions at opposite ends of each tread element |
| US7246644B2 (en) * | 2001-02-28 | 2007-07-24 | Pirelli Pneumatici S.P.A. | Tyre for a vehicle wheel including specific tread patterns |
| US7270163B2 (en) * | 2001-02-28 | 2007-09-18 | Pirelli Pneumatici S.P.A. | Tyre for a vehicle wheel including specific tread patterns |
| JP2003054222A (en) * | 2001-08-20 | 2003-02-26 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| US20180022163A1 (en) * | 2015-02-27 | 2018-01-25 | Compagnie Generale Des Etablissements Michelin | Tire With A Directional Tread Comprising Curved Blocks With Incisions |
| US10919342B2 (en) * | 2015-02-27 | 2021-02-16 | Compagnie Generale Des Etablissements Michelin | Tire with a directional tread comprising curved blocks with incisions |
| US11298980B2 (en) * | 2015-02-27 | 2022-04-12 | Compagnie Generale Des Etablissements Michelin | Tire with a directional tread comprising curved blocks with chamfers |
| CN105539018A (en) * | 2015-12-22 | 2016-05-04 | 赛轮金宇集团股份有限公司 | Steel disc for truck and bus tires and tire manufactured by using the same |
| US20220410636A1 (en) * | 2019-11-27 | 2022-12-29 | Compagnie Generale Des Etablissements Michelin | A tread for improving snow performance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2668366B2 (en) | 1997-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6116111A (en) | Pneumatic tyre | |
| JP3519473B2 (en) | Pneumatic tire for running on ice and snow | |
| JPH0195912A (en) | Pneumatic tire | |
| JPH0659765B2 (en) | Heavy vehicle tires | |
| JP2001121926A (en) | Pneumatic tire | |
| JPH07101210A (en) | Pneumatic tire | |
| JP2749879B2 (en) | Pneumatic tire with asymmetric tread | |
| JP3373900B2 (en) | Pneumatic tire | |
| JPH061119A (en) | Pneumatic tire for iced and snowy road | |
| JPH03186403A (en) | Pneumatic tire for use on ice-snow road | |
| JPH03186407A (en) | Pneumatic tire | |
| JPH05193309A (en) | Studless tire for automobile | |
| JP2628706B2 (en) | Pneumatic tire | |
| JPH05104909A (en) | Pneumatic tire | |
| JPH08183312A (en) | Pneumatic tire for iced and snowed road | |
| JP4149552B2 (en) | Radial tires for running in snowy muddy ground | |
| JPS60236806A (en) | Pneumatic tyre | |
| JP2769878B2 (en) | Pneumatic tire | |
| JPH06270612A (en) | Pneumatic radial tire | |
| JP2923797B2 (en) | Pneumatic radial tire | |
| JP3294039B2 (en) | Pneumatic tire | |
| JP3774551B2 (en) | Pneumatic radial tire | |
| JP2973024B2 (en) | Pneumatic tire | |
| JP2819146B2 (en) | Heavy-load pneumatic radial tire for icy and snowy roads | |
| JPH02179509A (en) | Pneumatic tire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |