| 摘要 |
A tire contour shape is formed by a single arc in a condition in which tire flattening rate is more than 55% and less than 70% and internal pressure is 5%. Shoulder lateral grooves extend at an angle α of 80 to 90° from the axially outer side of the tread ground-contact edge to the axially inner side of the tire, and the tire axially inner ends terminate within the shoulder land portion. A tire axial distance Ds between the tire axially inner end and the shoulder circumferential main groove is in the range of 3.5 to 5.5 mm, the shoulder lateral groove has the deepest part where the groove depth is largest, and the groove depth of the deepest part is 70 to 90% of the groove depth of the shoulder circumferential main grooves.
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