Pneumatic tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorHironori Kobayashi
Life of this patent
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Abstract
A pneumatic tire comprises: a carcass layer; a belt layer which is positioned to the outer side of the carcass layer in the tire radial direction; and a rubber tread which is positioned on the outer side of the belt layer in the tire radial direction. The belt layer is formed by laminating a pair of intersecting belts having belt angle with absolute values of 10 to 45° and mutually opposite-signed belt angles, and a circumferential reinforcing layer having a belt angle which is within a range of ±5° with respect to the tire circumferential direction. A distance (Gcc) from the tread profile to the tire inner circumferential surface along the tire equatorial plane, and a distance (Gsh) from a tread end to the tire inner circumferential surface have a relationship satisfying 1.10≤Gsh/Gcc.
Claims17
A pneumatic tire, comprising:
- a carcass layer;
- a belt layer disposed on an outer side of the carcass layer in a tire radial direction;
- a tread rubber disposed on an outer side of the belt layer in the tire radial direction;
- at least three circumferential main grooves extending in a tire circumferential direction;
- and
- a plurality of land portions defined by the circumferential main grooves;
- the belt layer being formed by laminating a pair of cross belts having a belt angle of not less than 10° and not greater than 45° in absolute values and having belt angles of mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to the tire circumferential direction;
- a distance Gcc from a tread profile to a tire inner circumferential surface along a tire equatorial plane, and a distance Gsh from a tread end to the tire inner circumferential surface having a relationship satisfying 1.20≤Gsh/Gcc;
- a shoulder drop amount Dt of the tread profile at a tire ground contact end and an outer diameter SH of the tread profile along the tire equatorial plane having a relationship satisfying 0≤Dt/SH≤0.008;
- and
- a shoulder drop amount De of the tread profile at an end portion of the circumferential reinforcing layer and the shoulder drop amount Dt of the tread profile at the tire ground contact end have a relationship satisfying 0.32≤De/Dt≤0.65.
Dependencies are inferred from the claim text.