US 12,350,969 B2
Pneumatic tire
Daichi Sugiyama, Kanagawa (JP)
Assigned to The Yokohama Rubber Co., LTD., Tokyo (JP)
Appl. No. 17/309,802
Filed by The Yokohama Rubber Co., LTD., Tokyo (JP)
PCT Filed Dec. 18, 2019, PCT No. PCT/JP2019/049709
§ 371(c)(1), (2) Date Jun. 18, 2021,
PCT Pub. No. WO2020/130058, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 2018-237681 (JP), filed on Dec. 19, 2018.
Prior Publication US 2022/0055411 A1, Feb. 24, 2022
Int. Cl. B60C 11/03 (2006.01)
CPC B60C 11/0304 (2013.01) [B60C 11/0302 (2013.01); B60C 2011/0353 (2013.01); B60C 2011/0365 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A pneumatic tire having an indicator designating a mounting direction with respect to a vehicle, the pneumatic tire comprising:
an outer shoulder main groove, an outer center main groove, an inner center main groove, and an inner shoulder main groove extending in a tire circumferential direction; and
an outer shoulder land portion, an outer second land portion, a center land portion, an inner second land portion, and an inner shoulder land portion defined by the main grooves,
the outer second land portion, the center land portion, and the inner second land portion comprising a road contact surface that partially bulges toward an outer side in a tire radial direction from a reference contour line of a tread profile in a cross-sectional view in a tire meridian direction, and
a groove width Wg1 of the outer shoulder main groove, a groove width Wg3 of the inner center main groove, and a groove width Wg4 of the inner shoulder main groove having a relationship of Wg3<Wg1<Wg4, 1.05≤Wg1/Wg3≤1.25, and 1.10≤Wg4/Wg3≤1.30.