Heavy duty pneumatic tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorKenichiro TANADA
Life of this patent
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Abstract
A heavy duty pneumatic tire 1 has provided in a buttress region 10 thereof a protrusion 11 extending in the tire circumferential direction. In a tire meridian cross-section, the maximum protrusion height hmax of the protrusion 11 from an imaginary buttress surface J is 3.0 mm or greater and is in the range of 0.025-0.050 times a half tread width Wt. The cross-sectional area Sa of the protrusion 11 protruding from the imaginary buttress surface J is 20 mm2 or greater.
Claims14
A heavy duty pneumatic tire comprising a tread portion having a tread surface and a sidewall portion connected to the tread surface through a buttress region, wherein
- the buttress region is provided with a protruding portion protruding outwardly in a tire axial direction and extending in a tire circumferential direction,
- in a tire meridian cross-sectional view, a maximum protrusion height (hmax) of the protruding portion, with respect to an imaginary buttress surface in which outer surfaces other than the protruding portion in the buttress region are smoothly connected, is equal to or more than 3.0 mm and is in a range of 0.025 to 0.050 times a tread half width (Wt), and
- a cross-sectional area (Sa) of the protruding portion from the imaginary buttress surface is equal to or more than 20 mm2.
Dependencies are inferred from the claim text.