Tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorShuichiro ONO
Life of this patent
Estimating the term…
Abstract
A tire including a tread portion, the tread portion having at least one main groove continuously extending in the tire circumferential direction, the tread portion including a rubber having a hardness at 60° C. of 58 or higher and a hardness at 0° C. of not more than 115% of the hardness at 60° C., the tread portion having a S50/S0 ratio of more than 1, wherein S0 denotes the sea proportion (%) in the tread ground contact surface of the new tire, and S50 denotes the sea proportion (%) when the tread portion is worn until the depth of the main groove reaches 50% of that of the new tire.
Claims15
A tire, comprising a tread portion,
- the tread portion having at least one main groove continuously extending in a tire circumferential direction,
- the tread portion comprising a rubber having a hardness at 60° C. of 58 or higher and a hardness at 0° C. of not more than 115% of the hardness at 60° C.,
- the tread portion having a S50/S0 ratio of more than 1, wherein S0 denotes a sea proportion (%) in a tread ground contact surface of the new tire, and S50 denotes a sea proportion (%) when the tread portion is worn until a depth of the main groove reaches 50% of that of the new tire.
Dependencies are inferred from the claim text.