| 摘要 |
The present invention combines rolling resistance performance and high-speed durability performance with electrical resistance reduction performance. The present invention is provided with: a rim cushion rubber provided to a place in contact with a rim of a bead section; an electroconductive rubber which is arranged together with the rim cushion rubber, which is provided such that one end is exposed to an outer surface of the rim cushion rubber so as to be in contact with the rim and another end is in contact with a tire component member adjacent to the rim cushion rubber, and which has a lower electrical resistance value than the rim cushion rubber; and a ground tread rubber (12) that is provided in a tread section (2) so as to pass through a cap tread rubber (2Aa) and undertread rubber (2Ab) of the tread section (2) with one end (12a) being exposed to a tread surface (21) and the other end (12b) being in contact with a belt layer (7) or belt reinforcement layer (8), that is formed such that the width (W5) of the thickness direction of the other end (12b) is greater than the width (W4) of the one end (12a) in a meridional cross-section, and that has a lower electrical resistance value than the cap tread rubber (2Aa). |
