| 摘要 |
Certain relief parts (11, 13) of a tread (1) for a radial tyre, are provided at least with incisions (41, 42, 43) having, in cross-section, outlines in the form of forks, and at least two prongs (41B, 41C) extending from a single portion (41A), the number of incisions (41) on the relief part (12, 13) being multiplied by a factor of at least 1.5 from the depth (h1) of the two-pronged incision (41). Use of such treads for tyres designed for use on wet, snowy or icy surfaces.
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