Pneumatic tire
Provided is a pneumatic tire including: a pair of bead cores embedded in a pair of bead portions; and a carcass including one or more carcass plies extending in a toroidal form between the pair of bead cores, wherein bead fillers are disposed on an outer side in a tire radial direction of the bead cores, rubber chafers are provided on an outer side in a tire width direction of the bead fillers, and when a storage modulus of the bead fillers is E1′, and a storage modulus of the rubber chafers is E2′, the ratio E2′/E1′ satisfies 0.4≤E2′/E1′ ≤1.
1 . A pneumatic tire comprising:
a pair of bead cores embedded in a pair of bead portions; and
a carcass including one or more carcass plies extending in a toroidal form between the pair of bead cores, wherein
the carcass includes a carcass body portion extending in a toroidal form between the pair of bead portions, and carcass fold-up portions being folded from the carcass body portion around the bead cores from an inner side in a tire width direction to an outer side in the tire width direction,
elastomeric bead fillers are disposed one on an outer side in a tire radial direction of each of the bead cores,
rubber chafers are provided one on the outer side in the tire width direction of each of the bead fillers,
when a storage modulus of the bead fillers is E1′, and a storage modulus of the rubber chafers is E2′, the ratio E2′/E1′ satisfies 0.6≤E2/E1′≤1,
a height of the bead fillers is 25 mm or less,
outer ends in the tire radial direction of the carcass fold-up portions are located further inward in the tire radial direction than a tire maximum width position,
the rubber gauge at the tire maximum width position is 3 mm or less, and
in the region radially outward of an innermost point of the respective bead filler, each of the rubber chafers is in direct contact with an entire outer side in the tire width direction of a respective one of the carcass fold-up portions.
2 . The pneumatic tire according to claim 1 , wherein a length in the tire radial direction of each of the rubber chafers is 30 to 60 mm.
3 . The pneumatic tire according to claim 2 , wherein innermost ends in the tire radial direction of the rubber chafers are located further inward in the tire radial direction than an innermost end in the tire radial direction of the respective one of the bead cores.
4 . The pneumatic tire according to claim 2 , wherein outermost ends in the tire radial direction of the rubber chafers are each located further outward in the tire radial direction than a respective rim separation point.
5 . The pneumatic tire according to claim 4 , wherein innermost ends in the tire radial direction of the rubber chafers are located further inward in the tire radial direction than an innermost end in the tire radial direction of the respective one of the bead cores.
6 . The pneumatic tire according to claim 1 , wherein outermost ends in the tire radial direction of the rubber chafers are each located further outward in the tire radial direction than a respective rim separation point.
7 . The pneumatic tire according to claim 6 , wherein innermost ends in the tire radial direction of the rubber chafers are located further inward in the tire radial direction than an innermost end in the tire radial direction of the respective one of the bead cores.
8 . The pneumatic tire according to claim 1 , wherein innermost ends in the tire radial direction of the rubber chafers are each located further inward in the tire radial direction than an innermost end in the tire radial direction of the respective one of the bead cores.