| 摘要 |
<p>In a side reinforcing type run flat tire, a minimum wall thickness portion is arranged between an end portion of each belt layer and a position at 70% of a tire cross-sectional height SH. A relationship between a thickness Gmin of the minimum wall thickness portion and a thickness Gmax of a maximum wall thickness portion 17 is 0.5×Gmax≰Gmin≰0.8×Gmax. A relationship between a length L min of a thin wall region and the tire cross-sectional height SH is 0.18×SH≰Lmin≰0.26×SH. A relationship among a weight Wr of a side reinforcing layer, a total weight Wt of the tire, and a tire flattening rate R is 0.08×Wt×(1−0.2×(1−R/50))≰Wr≰0.18×Wt×(1−0.2×(1−R/50)). A relationship between a thickness Ga at a rim check line position of an outer side rubber portion more to the outer side than a carcass layer and a maximum thickness Gb thereof is 0.8×Gb≰Ga≰1.0×Gb.</p> |
