CPC B60C 11/1218 (2013.01) [B60C 11/0323 (2013.01); B60C 11/042 (2013.01); B60C 11/125 (2013.01); B60C 2011/1213 (2013.01); B60C 2200/06 (2013.01)] | 9 Claims |
1. A tire comprising:
a main tread portion having a stabilizing circumferential groove located between a first and second rib;
the stabilizing circumferential groove having a cross section with a first and second slanted sidewall joined together with a bottom surface, the stabilizing circumferential groove further including a stabilizing structure for increasing tread stiffness, the stabilizing structure having a sub-groove located radially inward of the bottom surface, wherein the sub-groove extends circumferentially in a wavy pattern,
the sub-groove having a first sidewall and a second sidewall interconnected by a curved surface forming a radially innermost bottom of the subgroove.
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