Patent ID: 8844594
Filing Date: 2014-09-30
Classification: B60C,Y10S

Abstract:
1. A pneumatic tire provided with a tread pattern having a transverse groove formed between a plurality of blocks, wherein said transverse groove comprises: a top side groove portion provided with stepped walls extending, while a groove width of the top side groove portion is defined by an interval between imaginary straight lines running through centers of the respective stepped walls, and expands for the entire length of said top side groove portion, to a tread end side; and a bottom side groove portion provided with zigzag wall surfaces extending to a tread end side, while a groove width of the bottom side groove portion is defined by the interval between the imaginary straight lines running through the centers of the respective zigzag wall surfaces and is substantially constant, wherein said transverse groove further comprises a first location at which a groove width of the bottom side groove portion is smaller than the groove width of the top side groove portion and a second location at which the groove width of the top side groove portion is greater than the groove width of the bottom side groove portion, wherein the bottom side groove portion of said transverse groove is provided a bottom surface of the transverse groove to at a height of 15 to 50% of the block height, and the top side groove portion is provided thereafter.