Motorcycle tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorYutaka Ichiryu
Life of this patent
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Abstract
A motorcycle tire includes a tread portion including a crown portion that is a region of 50% of a tread development width centered on a tire equator, a first shoulder portion that is an outer region of the crown portion, and first lateral grooves. Each lateral groove includes a first groove portion in the crown portion, a second groove portion in the first shoulder portion, and a third groove portion connecting the first and second groove portions. A groove depth and a groove width of the third groove portion are respectively smaller than groove depths and groove widths of the first groove portion and the second groove portion, respectively. More than 80% of a tire axial length of the third groove portion is in the first shoulder portion.
Claims19
A motorcycle tire comprising:
- a tread portion comprising a crown portion that is a region of 50% of a tread development width centered on a tire equator, a first shoulder portion that is an outer region of the crown portion, and a plurality of first lateral grooves,
- each of the plurality of first lateral grooves comprising a first groove portion arranged in the crown portion, a second groove portion arranged in the first shoulder portion, and a third groove portion connecting the first groove portion and the second groove portion,
- wherein
- a groove depth and a groove width of the third groove portion are respectively smaller than a groove depth and a groove width of the first groove portion,
- the groove depth and the groove width of the third groove portion are respectively smaller than a groove depth and a groove width of the second groove portion,
- more than 80% of a tire axial length of the third groove portion is located in the first shoulder portion,
- each of the plurality of first lateral grooves further comprises a fourth groove portion extending outward in a tire axial direction from the second groove portion,
- a groove depth and a groove width of the fourth groove portion are respectively smaller than the groove depths and the groove widths of the first groove portion and the second groove portion, respectively,
- the second groove portion includes a first groove edge located on a first side in a tire circumferential direction and a second groove edge located on a second side in the tire circumferential direction,
- the fourth groove portion includes a first groove edge on the first side in the tire circumferential direction and a second groove edge located on the second side in the tire circumferential direction,
- the first groove edge of the fourth groove portion is offset toward the second side in the tire circumferential direction from an extension line of the first groove edge of the second groove portion, and
- the second groove edge of the fourth groove portion is connected to the second groove edge of the second groove portion so as to form a single circular arc with each other.
Dependencies are inferred from the claim text.