TIRE
To provide a run flat tire capable of suppressing occurrence of rim detachment when lateral force is applied in run flat traveling.SOLUTION: There is provided the run flat tire, in which rim strip rubbers 32, 41 are rubber members which are integral rubber members, and the rim strip rubbers are part...
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Zusammenfassung: | To provide a run flat tire capable of suppressing occurrence of rim detachment when lateral force is applied in run flat traveling.SOLUTION: There is provided the run flat tire, in which rim strip rubbers 32, 41 are rubber members which are integral rubber members, and the rim strip rubbers are partially arranged outside of a bead core 21 in a tire width direction, and also are partially arranged inside of a side wall rubber 30 in the tire width direction. In addition, hardness of the rim strip rubber 32 is higher than hardness of the side wall rubber 30, and in cross sectional view in the tire width direction, when a tire radial direction distance between a position of a first corner part 21A closest to a bead toe 11B of the bead core cross section, and a position of a third corner part 21C farthest from the bead toe 11B of the bead core cross section, is a distance Ld, and a tire width direction distance between the position of the first corner part 21A closest to the bead toe 11B of the bead core cross section and a centroid position G of the bead core cross section, is a distance Lg, a following formula (1): Lg/Ld≥2/3 is satisfied.SELECTED DRAWING: Figure 2
【課題】ランフラット走行時に横力がかかったときのリム外れの発生を抑制することが可能なランフラットタイヤを提供する。【解決手段】ランフラットタイヤであって、リムストリップゴム32、41は、一体的なゴム部材として、ビードコア21のタイヤ幅方向外側に一部が配置され、かつサイドウォールゴム30のタイヤ幅方向内側にも一部が配置されているゴム部材であり、さらに、リムストリップゴム32の硬度は、サイドウォールゴム30の硬度よりも高く、タイヤ幅方向断面視において、ビードコア断面のビードトウ11Bに最も近い第1の角部21Aの位置と、ビードコア断面のビードトウ11Bから最も遠い第3の角部21Cの位置との、タイヤ径方向距離を距離Ld、ビードコア断面のビードトウ11Bに最も近い第1の角部21Aの位置と、ビードコア断面の重心位置Gとの、タイヤ幅方向距離を距離Lgとしたとき、式(1)Lg/Ld≧2/3を満たす。【選択図】図2 |
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