Pneumatic tire

摘要

There is provided a pneumatic tire having excellent uneven wear resistance performance, low rolling resistance and durability of side portion's appearance. The pneumatic tire comprises a carcass as a framework consisting of at least one carcass ply troidally extending between bead portions embedded with a pair of bead cores and turned around the bead cores from an inner side to an outer side in a tire width direction, a belt comprising at least one inclined belt layer and a tread successively disposed on a radially outer side of a crown portion of the carcass, wherein a ratio BD/BW is in a range between 0.01 and 0.04 in a section of the tire in the width direction in a state where the tire is mounted on an application rim, where BD is radius difference between radius at a central portion and radius at an end portion in the tire width direction of the outermost layer of the inclined belt layer and BW is a width of the outermost layer and CSEh is larger than SWh, where CSEh is a shortest distance from an end of a turn-up portion of the at least one carcass ply to a line drawn in parallel with a tire rotation axis at a bead toe and SWh is a shortest distance between a line drawn in parallel with the tire rotation axis at a maximum width position of the tire and the line drawn in parallel with the tire rotation axis at the bead toe.

主权项

1. A pneumatic tire comprising a carcass as a framework consisting of at least one carcass ply troidally extending between bead portions embedded with a pair of bead cores and turned around the bead cores from an inner side to an outer side in a tire width direction, a belt comprising at least one inclined belt layer and a tread successively disposed on a radially outer side of a crown portion of the carcass, wherein
a ratio BD/BW is in a range between 0.01 and 0.04 in a section of the tire in the width direction in a state where the tire is mounted on an application rim, where BD is radius difference between radius at a central portion and radius at an end portion in the tire width direction of the outermost layer of the inclined belt layer and BW is a width of the outermost layer and CSEh is larger than SWh, where CSEh is a shortest distance from an end of a turn-up portion of the at least one carcass ply to a line drawn in parallel with a tire rotation axis at a bead toe and SWh is a shortest distance between a line drawn in parallel with the tire rotation axis at a maximum width position of the tire and the line drawn in parallel with the tire rotation axis at the bead toe, wherein a ratio SWh/SH of the shortest distance SWH to a section height SH of the tire lies within a range of 0.758-0.811, inclusive.