| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire having a tread pattern containing a variable pitch whose unbalance in weight is improved.SOLUTION: The pneumatic tire contains a pattern design line in which pitch elements are arranged at random so that the value of pitch volume at each pitch element divided with pitch length comes to be of a plurality of kinds. The pattern design line incudes an arrangement so specified as to satisfy A/A<0.02, where Ais the amplitude of a primary component that fluctuates once per rotation of a tire and Ais the sum of order components of entire cycle, in the case where order analyzing is made for time series waveform per circumference of a tire about the value of pitch volume at each pitch element divided with pitch length. |
