| 摘要 |
PURPOSE:To provide a pneumatic tire capable of reducing rolling resistance and passing noises, improving snow travelling and being used as one for electric car in all seasons. CONSTITUTION:A ratio K (=S1/S) between the area S of a grounding area 7 and the area S1 of the total tread groove area 9 positioned therein is 20 to 32%, lateral edge density (alpha) in the grounding area 7 is 0.065 to 0.085mm/mm<2> and a pattern repeating unit N is 30 to 60 pieces. |
