PNEUMATIC TIRE

1 . A pneumatic tire, comprising:

a tread portion extending in a tire circumferential direction and having an annular shape;

a pair of sidewall portions respectively disposed on both sides of the tread portion;

and a pair of bead portions each disposed on an inner side of the sidewall portions in a tire radial direction;

a first filler rubber being disposed on an outer circumference of a bead core of each of the bead portions,

a carcass layer being mounted between the pair of bead portions,

a plurality of belt layers being disposed on an outer circumferential side of the carcass layer in the tread portion,

the carcass layer being turned up from a tire inner side to a tire outer side around the bead core,

a second filler rubber being disposed on an outer side of the carcass layer in a tire width direction, and

a transponder being disposed between the carcass layer and the second filler rubber in contact with the second filler rubber.

2 . The pneumatic tire according to claim 1 , wherein an upper end of the second filler rubber is higher than an upper end of the first filler rubber.

3 . The pneumatic tire according to claim 1 , wherein

the upper end of the second filler rubber is disposed within a range of from 50% to 95% of a tire cross-sectional height SH, and an upper end of the first filler rubber is disposed within a range of from 40% to 55% of the tire cross-sectional height SH.

4 . The pneumatic tire according to claim 1 , wherein a lower end of the second filler rubber is disposed within a range of from 5% to 60% of the tire cross-sectional height SH.

5 . The pneumatic tire according to claim 1 , wherein a JIS hardness of the first filler rubber and a JIS hardness of the second filler rubber each range from 72 to 96.

6 . The pneumatic tire according to claim 1 , wherein a center of the transponder is disposed 10 mm or more away from a splice portion of a tire component in the tire circumferential direction.

7 . The pneumatic tire according to claim 1 , wherein the transponder is covered with a coating layer formed of elastomer or rubber, and the coating layer has a relative dielectric constant of 7 or less.

8 . The pneumatic tire according to claim 7 , wherein a total thickness Gac of the coating layer and a maximum thickness Gar of the transponder satisfy a relationship 1.1≤Gac/Gar≤3.0.

9 . The pneumatic tire according to claim 7 , wherein

the transponder comprises a substrate and antennas extending from both ends of the substrate, the transponder extends along the tire circumferential direction, and

a distance L between an end of the antennas in the tire circumferential direction and an end of the coating layer in the tire circumferential direction ranges from 2 mm to 20 mm.

10 . The pneumatic tire according to claim 7 , wherein the transponder comprises a substrate and antennas extending from both ends of the substrate, and the antennas extend within a range of ±20° with respect to the tire circumferential direction.

11 . The pneumatic tire according to claim 7 , wherein a center of the transponder in a thickness direction is disposed within a range of from 25% to 75% of a total thickness Gac of the coating layer from a surface on one side of the coating layer in a thickness direction.

12 . The pneumatic tire according to claim 2 , wherein

the upper end of the second filler rubber is disposed within a range of from 50% to 95% of a tire cross-sectional height SH, and

an upper end of the first filler rubber is disposed within a range of from 40% to 55% of the tire cross-sectional height SH.

13 . The pneumatic tire according to claim 12 , wherein a lower end of the second filler rubber is disposed within a range of from 5% to 60% of the tire cross-sectional height SH.

14 . The pneumatic tire according to claim 13 , wherein a JIS hardness of the first filler rubber and a JIS hardness of the second filler rubber each range from 72 to 96.

15 . The pneumatic tire according to claim 14 , wherein a center of the transponder is disposed 10 mm or more away from a splice portion of a tire component in the tire circumferential direction.

16 . The pneumatic tire according to claim 15 , wherein

the transponder is covered with a coating layer formed of elastomer or rubber, and

the coating layer has a relative dielectric constant of 7 or less.

17 . The pneumatic tire according to claim 16 , wherein a total thickness Gac of the coating layer and a maximum thickness Gar of the transponder satisfy a relationship 1.1≤Gac/Gar≤3.0.

18 . The pneumatic tire according to claim 17 , wherein

the transponder comprises a substrate and antennas extending from both ends of the substrate,

the transponder extends along the tire circumferential direction, and

a distance L between an end of the antennas in the tire circumferential direction and an end of the coating layer in the tire circumferential direction ranges from 2 mm to 20 mm.

19 . The pneumatic tire according to claim 18 , wherein

the transponder comprises a substrate and antennas extending from both ends of the substrate, and

the antennas extend within a range of ±20° with respect to the tire circumferential direction.

20 . The pneumatic tire according to claim 19 , wherein a center of the transponder in a thickness direction is disposed within a range of from 25% to 75% of a total thickness Gac of the coating layer from a surface on one side of the coating layer in a thickness direction.