| 摘要 |
A method of designing a tire designs a tire including a block row which has a plurality of blocks sectioned by circumferential grooves and lateral grooves, and which is formed along a tire circumferential direction. The method of designing a tire comprises the steps of determining a resonance sound frequency f being a reference frequency of an air column resonance sound produced by the tire, on the basis of a ground contact length of the tire in a case where a standard internal pressure and a standard load are applied to the tire; and the steps of determining the number of pitches of the block row in such a manner that a secondary pitch noise frequency fp2 is shifted from the resonance sound frequency f, the secondary pitch noise frequency fp2 being a secondary component of a reference frequency of pitch noise arising from the block row at a reference speed being a reference traveling speed of a vehicle equipped with the tire.
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