Pneumatic tire with electrically conductive rubber within rim cushion rubber

A pneumatic tire, comprising:

• a tread portion intended to come into contact with a road surface, the tread portion being disposed exposed to an outermost side in a tire radial direction;
• a belt layer disposed inward of the tread portion in the tire radial direction;
• a belt reinforcing layer disposed outward of at least a portion of the belt layer in the tire radial direction;
• a pair of sidewall portions, one disposed exposed on each of two outermost sides in a tire width direction;
• a pair of bead portions, one disposed on each sidewall portion, each bead portion having a rim cushion rubber disposed where the respective bead portion is intended to come into contact with a rim;
• a carcass layer reaching both of the bead portions in the tire width direction and extending in a tire circumferential direction, the carcass layer being disposed inward of and adjacent to the belt layer in the tire radial direction;
• and
• an electrically conductive rubber disposed in each rim cushion rubber, each electrically conductive rubber including
• a first end intended to be in contact with the rim, the first end being exposed on an outer surface of the respective rim cushion rubber, and
• a second end in contact with a rubber innerliner layer disposed on a tire inner surface adjacent to the respective rim cushion rubber and to the carcass layer;
• wherein
• an electrical resistance value of each electrically conductive rubber and a portion of the tread portion is from 5.5×104 Ω·cm to 1×106 Ω·cm under a condition of 23° C. temperature;
• an electrical resistance value of the rubber innerliner layer, a coating rubber of the carcass layer, a coating rubber of the belt layer, and a coating rubber of the belt reinforcing layer is from 1×106 Ω·cm to 1×108 Ω·cm under the condition of 23° C. temperature;
• and
• an electrical resistance value of the respective rim cushion rubber and a side rubber forming each of the pair of sidewall portions is 1×108 Ω·cm or greater under the condition of 23° C. temperature.