| 摘要 |
In a pneumatic tyre for passenger cars with a tread with a wide ground contact surface and a tread profile with good anti-skidding properties in the wet, the tread has, as main tread grooves, a pair of central vertical grooves (1) which extend linearly on both sides along the central plane (O-O) of the tyre and a pair of second vertical grooves (2), each of which subdivides the area between a central vertical groove (1) and the associated side edge (L-L) of the tread into two zones (II, III) and extends linearly along the circumference. In addition, the tread has a plurality of transverse grooves (3) which obliquely intersect the main grooves (1, 2) over the entire width of the tread in a fishbone pattern, and a plurality of independent blocks (4) which are formed by the combination of the grooves (1, 2, 3). Each transverse groove (3) intersects the tread between the central plane (O-O) of the tyre and the associated central vertical groove (1) and between the associated second vertical groove (2) and the associated side edge (L-L) of the tread at a central angle of intersection of 60 DEG -90 DEG , and between the two associated vertical grooves (1, 2) at a central angle of intersection of 30 DEG -60 DEG with respect to the central plane (O-O) of the tyre. The ratio of the entire outer surfaces of the blocks (4) in the associated zones (I, II, III), divided into three, between the central plane (O-O) of the tyre and a side edge (L-L) of the ... Original abstract incomplete. <IMAGE>
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