| 摘要 |
<p>The outer surface of the tire is provided in its region radially inside a maximum width position of the carcass with vent lines (9) extending in a tire circumferential direction, wherein the vent lines (9) include a radially inner first vent line (9A) and a radially outer second vent line (9B). The area between the first vent line (9A) and second vent line (9B) is formed as a serrated area (11) comprising a plurality of circumferentially spaced small ribs (10) extending from the first vent line (9A) to the second vent line (9B). The serrated area (11) has deepest parts and shallowest parts. The shallowest parts are located inside the ridge of each of the vent lines, and the deepest parts are located at the same level as or outside a virtual tire outer surface.
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