PNEUMATIC TIRE

• Main Author: ASANO TOMOHIRO
• Format: Patent
• Language: English; Japanese
• Published: 30.05.2019
• Subjects: DEVICES OR ARRANGEMENTS RELATED TO TYRES; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; VEHICLE TYRES; VEHICLES IN GENERAL

To improve wet braking performance and wet steering stability performance while improving rolling resistance.SOLUTION: The pneumatic tire comprises five or more circumferential main grooves and a plurality of land parts having blocks divided by lug grooves. The ratio of a range in a tire width direction of the block to a tread spreading width is 0.55-0.70, the ratio of a groove width of circumferential main grooves other than the outermost circumferential main groove to the tread spreading width is 0.007-0.024, the ratio of groove width of the lug groove to the tread spreading width is 0.003-0.016, all of the land parts are in bilateral symmetry at both sides across a tire equator surface CL, and the lug grooves communicate with each other in the land parts which are adjacent to each other.SELECTED DRAWING: Figure 2 【課題】転がり抵抗を改善しつつ、ウェット制動性能およびウェット操縦安定性能を向上させる。【解決手段】空気入りタイヤは、５本以上の周方向主溝と、ラグ溝で分断されるブロックを有する複数の陸部とを備える。ブロックのタイヤ幅方向の範囲はトレッド展開幅に対して０．５５〜０．７０、最外側周方向主溝以外の周方向主溝の溝幅は、トレッド展開幅に対して０．００７〜０．０２４、ラグ溝の溝幅はトレッド展開幅に対して０．００３〜０．０１６、タイヤ赤道面ＣＬを挟む両側において陸部すべてが左右対称であり、隣り合う陸部同士においてラグ溝が連通している。【選択図】図２