PNEUMATIC TIRE

PROBLEM TO BE SOLVED: To provide a pneumatic tire equalizing a ground contact pressure in a circumferential direction and improved in brake performance by alternately arranging V-shaped grooves and U-shaped grooves on a block in the circumferential direction, and lining up in the order of a length.SOLUTION: A pneumatic tire includes: at least three circumferential direction main grooves provided on a tread; lug main grooves crossing the circumferential direction main grooves; a block land part partitioned by the circumferential direction main grooves and the lug main grooves; V-shaped lug grooves provided in the block land part and processed in a V-shaped cross section; and U-shaped lug grooves provided in the block land part and processed in a U-shaped cross section. The V-shaped lug grooves and the U-shaped lug grooves that have different lengths respectively, are provided on the block land part by at least three grooves in total, alternately arranged in the circumferential direction, and lined up in the order of a length. 【課題】ブロック上にＶ字溝とＵ字溝とを周方向に交互に配置し、且つ長さの順に並べることで、周方向の接地圧を均一化し、制動性能の向上した空気入りタイヤを提供する。【解決手段】トレッドに設けられた３本以上の周方向主溝と、前記周方向主溝と交差するラグ主溝と、前記周方向溝と前記ラグ主溝とで区画されたブロック陸部と、前記ブロック陸部に設けられ、Ｖ字断面に加工されたＶ字ラグ溝と、前記ブロック陸部に設けられ、Ｕ字断面に加工されたＵ字ラグ溝と、を備え、前記ブロック陸部に合計３本以上設けられ、互いに長さの異なる前記第Ｖ字ラグ溝と前記Ｕ字ラグ溝とは周方向に交互に配置され、長さ順に配列された空気入りタイヤ。【選択図】図１