| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve riding comfort and reduce weight of a tire without sacrificing run-flat durability in a side reinforced type pneumatic run-flat tire. Ž<P>SOLUTION: When a gauge of a side reinforced rubber 26 on a first normal N1 passing an end in a tire width direction of a belt layer 20 and forming a right angle with respect to a tire contour line when seen from a cross section along a tire rotation axis is A, and a gauge of the side reinforced rubber 26 on a second normal N2 passing a tire maximum width position Wmax of a carcass 18 and orthogonal to an outer face of the carcass 18 is B, 0.2≤A/B≤0.4 is satisfied. The gauges of the side reinforced rubber 26 are optimized, run-flat durability is secured, the gauge of the side reinforced rubber 26 near an end of the belt layer 20 is made thinner and lighter in weight than conventionally, and riding comfort can be improved. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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