| 摘要 |
PURPOSE:To cause noise to be dispersed throughout a wider frequency band, by a method wherein pitches of tread patterns on both sides with a tread central line therebetween are arranged asymmetrically. CONSTITUTION:Pitches of tread patterns on a right side 4 and a left side 3 with a central line 2 therebetween are arranged asymmetrically when the whole of a tyre is seen. Preferably, regularity of pitch arrangement on the left side is the same as that of pitch arrangement on the right side, and the arranging directions on the right and the left side are reveres to each other. This enables noise to be dispersed through a wider frequency band, resulting in production of an effect in which reduced noise is felt by a human body. |
