Pneumatic tires

B - Operations – Transporting – 60 – C

Patent

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152/126

B60C 11/11 (2006.01)

Patent

CA 1221609

Abstract of the Disclosure PNEUMATIC TIRES A pneumatic tire (10) having a tread portion (ll) comprises a mid-circumferential zig-zag rib (16) and a plurality of blocks (21) located in the edge portions of the tread between adjacent peaks (22) of the zig-zag rib. The zig-zag rib has amplitude of between 60-70% of the tread width TW and has side faces thereon that have an exposed length of at least 40% of the tread width. By varying the width (a,c) of the grooves (25,26), between the blocks and the rib, on one rotational directional side of the rib from the width of the grooves on the other rotational directional side of the rib, it is possible for the tire to have different traction grips for each rotational direction.

470515

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