A pneumatic tire includes: a carcass layer wrapping a bead core and a bead filler and being turned back; a steel chafer formed by steel cords and disposed between the carcass layer and a rim fitting surface; and sub-chafers between the steel chafer and the rim fitting surface and made of organic fiber. The steel chafer includes an outer end portion outward of the bead filler in a tire lateral direction. The outer end portion has a height from 0.5 times to 0.7 times a height of a rim flange. The sub-chafers each include an outer end portion outward of the bead filler in the tire lateral direction. The outer end portion has a height from 0.7 times to 0.9 times a height of a rim flange. The carcass layer has a turned up height from 2.5 times to 4.5 times a height of a rim flange.

Provided is a pneumatic tire. A transponder is embedded on an outer side in a tire width direction of a carcass layer, and the tan δout (−20° C.) at −20° C. of a rubber member having the largest storage modulus at 20° C. of rubber members located on the outer side in the tire width direction of the transponder is in the range of from 0.1 to 0.7. Further, the transponder is embedded on the outer side in the tire width direction of the carcass layer, and the tan δin (−20° C.) at −20° C. of a rubber member having the largest storage modulus at 20° C. of rubber members located on an inner side in the tire width direction of the transponder is in the range of from 0.1 to 0.7.

Provided is a pneumatic tire. A transponder is embedded on an outer side in a tire width direction of a carcass layer, and the tan δout (−20° C.) at −20° C. of a rubber member having the largest storage modulus at 20° C. of rubber members located on the outer side in the tire width direction of the transponder is in the range of from 0.1 to 0.7. Further, the transponder is embedded on the outer side in the tire width direction of the carcass layer, and the tan δin (−20° C.) at −20° C. of a rubber member having the largest storage modulus at 20° C. of rubber members located on an inner side in the tire width direction of the transponder is in the range of from 0.1 to 0.7.

Provided are an RFID (radio frequency identification) module and a pneumatic tire in which the RFID module is embedded. An RFID module includes an IC (integrated circuit) substrate that stores data, an antenna that transmits and receives data, and a covering layer that covers the antenna. The covering layer contains calcium carbonate, and a relative dielectric constant of the covering layer is 7 or less.

A pneumatic tire is provided. A transponder is embedded in an outer side of a carcass layer in a tire width direction, a rubber member having a largest storage modulus at 20° C. of rubber members located on an outer side of the transponder in the tire width direction has a storage modulus at 0° C. E′out(0° C.) and a storage modulus at −20° C. E′out(−20° C.) that satisfy a relationship 0.50≤E′out(0° C.)/E′out(−20° C.)≤0.95, and a rubber member having a largest 20° C. storage modulus of rubber members located on an inner side of the transponder in the tire width direction has a storage modulus at 0° C. E′in(0° C.) and a storage modulus at −20° C. E′in(−20° C.) that satisfy a relationship 0.50≤E′in(0° C.)/E′in(−20° C.)≤0.95.

A pneumatic tire is provided. A transponder is embedded in an outer side of a carcass layer in a tire width direction, a rubber member having a largest storage modulus at 20° C. of rubber members located on an outer side of the transponder in the tire width direction has a storage modulus at 0° C. E′out(0° C.) and a storage modulus at −20° C. E′out(−20° C.) that satisfy a relationship 0.50≤E′out(0° C.)/E′out(−20° C.)≤0.95, and a rubber member having a largest 20° C. storage modulus of rubber members located on an inner side of the transponder in the tire width direction has a storage modulus at 0° C. E′in(0° C.) and a storage modulus at −20° C. E′in(−20° C.) that satisfy a relationship 0.50≤E′in(0° C.)/E′in(−20° C.)≤0.95.

Provided is a pneumatic tire. A transponder is embedded in an outer side in a tire width direction of a carcass layer, the transponder is covered by a covering layer, and a storage modulus E′c at 20° C. of the covering layer and a storage modulus E′out at 20° C. of a rubber member having the largest storage modulus at 20° C. of rubber members located on an outer side in the tire width direction of the transponder satisfy the relationship 0.1≤E′c/E′out≤1.5. Further, the storage modulus E′c at 20° C. of the covering layer and a storage modulus E′in at 20° C. of a rubber member having the largest storage modulus at 20° C. of rubber members located on an inner side in the tire width direction of the transponder satisfy the relationship 0.03≤E′c/E′in≤1.50.

Provided is a pneumatic tire. A transponder is embedded in an outer side in a tire width direction of a carcass layer, the transponder is covered by a covering layer, and a storage modulus E′c at 20° C. of the covering layer and a storage modulus E′out at 20° C. of a rubber member having the largest storage modulus at 20° C. of rubber members located on an outer side in the tire width direction of the transponder satisfy the relationship 0.1≤E′c/E′out≤1.5. Further, the storage modulus E′c at 20° C. of the covering layer and a storage modulus E′in at 20° C. of a rubber member having the largest storage modulus at 20° C. of rubber members located on an inner side in the tire width direction of the transponder satisfy the relationship 0.03≤E′c/E′in≤1.50.

Provided is a pneumatic tire that can provide improved transponder durability while ensuring tire durability. The pneumatic tire includes: a tread portion (1) extending in a tire circumferential direction and having an annular shape; a pair of sidewall portions (2) disposed on both sides of the tread portion (1); and a pair of bead portions (3) disposed on an inner side in a tire radial direction of the sidewall portions (2). The tire is embedded with a transponder (20) covered with a covering layer (23). A glass transition temperature (Tg) of the covering layer (23) is in a range of from −70° C. to −45° C.

Provided is a pneumatic tire that can provide improved transponder durability while ensuring tire durability. The pneumatic tire includes: a tread portion (1) extending in a tire circumferential direction and having an annular shape; a pair of sidewall portions (2) disposed on both sides of the tread portion (1); and a pair of bead portions (3) disposed on an inner side in a tire radial direction of the sidewall portions (2). The tire is embedded with a transponder (20) covered with a covering layer (23). A glass transition temperature (Tg) of the covering layer (23) is in a range of from −70° C. to −45° C.