| 摘要 |
PURPOSE:To reduce a fluctuation phenomenon of a vehicle travelling on a road provided with a rain groove by providing at least two annular along the periphery of a tire on a wheel tread of a tire and rounding the side end of the groove. CONSTITUTION:When an automobile travels, the side end of a rain groove 2 provided on a road 1 may contact m the side end 5 of a pattern groove 4 provided on a wheel tread of a tire. Then, the side end 5 of the pattern groove 4 engages the side end of the rain groove 2 to produce the fluctuation phenomenon of the automobile. For the corrective measure are provided at least two annular pattern grooves 4 along the periphery of the tire on the wheel tread of trad 3 of the tire and the side end 5 of the groove 4 is rounded. Thus, even if the side end of the rain groove 2 contacts the side end 5 of the pattern groove 4 the engagement of both side ends is reduced to reduce the fluctuation phenomenon of the automobile. |
