Pneumatic tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorYuki NAGAHASHI
Life of this patent
Estimating the term…
Abstract
A pneumatic tire includes a first main groove on the outer side in the vehicle width direction of the equatorial plane, a second main groove closer to the equatorial plane than the first main groove, a third main groove on the inner side in the vehicle width direction of the equatorial plane, a fourth main groove farther from the equatorial plane than the third main groove, a first narrow groove between the third and fourth main grooves, and a first groove portion extending in the width direction between the first narrow groove and the fourth main groove and opening at one end to the fourth main groove. A relationship between the first main groove width G1, the third main groove width G3, and the fourth main groove width G4 satisfies 1.05≤G1/G3≤1.25, 1.10≤G4/G3≤1.30, and G3<G1<G4.
Claims18
A pneumatic tire, comprising:
- a mounting direction indicator portion that indicates a mounting direction of a tire on a vehicle;
- and
- a tread surface that is asymmetric on an outer side in a vehicle width direction and an inner side in the vehicle width direction with respect to a tire equatorial plane,
- the tread surface comprising a first main groove extending in a tire circumferential direction at a position on the outer side in the vehicle width direction of the tire equatorial plane, a second main groove extending in the tire circumferential direction at a position closer to the tire equatorial plane than the first main groove, a third main groove extending in the tire circumferential direction at a position on the inner side in the vehicle width direction of the tire equatorial plane, a fourth main groove extending in the tire circumferential direction at a position farther from the tire equatorial plane than the third main groove, a first narrow groove extending in the tire circumferential direction at a position between the third main groove and the fourth main groove, and a first groove portion extending in the tire width direction at a position between the first narrow groove and the fourth main groove and opening at one end to the fourth main groove, and
- when a groove width of the first main groove is G1, a groove width of the third main groove is G3, and a groove width of the fourth main groove is G4,
- relationships 1.05≤G1/G3≤1.25, 1.10≤G4/G3≤1.30 being satisfied, and
- additionally, a relationship G3<G1<G4 being satisfied.
Dependencies are inferred from the claim text.