| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve road surface follow-up performance by enabling flexible tire deformation when traveling on a bad road having large unevenness such as a rock place under a low inner pressure condition. <P>SOLUTION: In this pneumatic radial tire including three or less steel belt layers, a first block 30 and a second block 32 extending to the width direction outer side Wo than the first block are alternately provided in a tire peripheral direction C on a ground edge region of a tread 16. In a sidewall 14, an annular region 36 extending over the entire periphery of the peripheral direction C is provided on an outer surface of the radial direction outer side Ko than a maximum cross section width position 34. In the annular region, a plurality of projections 40 are provided side by side in the peripheral direction C. An outer thin wall 42 continuing in the peripheral direction C along an outer peripheral edge of the annular region and an inner thin wall 44 continuing in the peripheral direction C along an inner peripheral edge of the annular region are provided. The outer thin wall 42 is arranged adjacent to an inner surface radius position 50 at the radial direction inner side Ki than the inner surface radius position 50. <P>COPYRIGHT: (C)2013,JPO&INPIT |
