A pneumatic tire is provided where, in a tread center portion, there are at least three pitch variations in terms of pitch length in the circumferential direction of the tire, and, taking n as the pitch count, the pitch lengths Pc Pc1, Pc2, Pc3, . . . , Pcn in order from longest to shortest satisfy the relationships Pc1/Pc2≧Pc2/Pc3≧, . . . , ≧Pcn−1/Pcn and Pc1/Pc2>Pcn−1/Pcn.