US 12,319,103 B2
Pneumatic tire
Mizuki Kuninaka, Kanagawa (JP)
Assigned to The Yokohama Rubber Co., LTD., Tokyo (JP)
Appl. No. 17/310,197
Filed by The Yokohama Rubber Co., LTD., Tokyo (JP)
PCT Filed Dec. 25, 2019, PCT No. PCT/JP2019/051004
§ 371(c)(1), (2) Date Jul. 26, 2021,
PCT Pub. No. WO2020/158277, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 2019-015711 (JP), filed on Jan. 31, 2019.
Prior Publication US 2022/0169079 A1, Jun. 2, 2022
Int. Cl. B60C 11/00 (2006.01); B60C 3/04 (2006.01); B60C 9/00 (2006.01); B60C 9/18 (2006.01); B60C 9/20 (2006.01); B60C 9/22 (2006.01); B60C 11/13 (2006.01); B60C 19/00 (2006.01); B60C 11/03 (2006.01)
CPC B60C 9/2009 (2013.01) [B60C 9/005 (2013.01); B60C 9/22 (2013.01); B60C 11/0083 (2013.01); B60C 11/1376 (2013.01); B60C 19/002 (2013.01); B60C 2009/2067 (2013.01); B60C 2011/0033 (2013.01); B60C 2011/0341 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A pneumatic tire, comprising:
a tread portion provided with at least three circumferential main grooves defining and forming a center land portion so as to include a tire equatorial plane,
the tread portion comprising at least one full cover layer disposed on an outer side of a belt layer in a tire radial direction and covering the belt layer by entire width thereof and at least one center cover layer disposed on an outer side of the full cover layer in the tire radial direction and locally covering a central region of the belt layer in a tire width direction,
a band-like sound absorbing member being formed on an inner side of an innerliner in the tire radial direction, and
a tread average thickness A in a tire width direction region of the center land portion in which the center cover layer is disposed, a tread average thickness B in a tire width direction region of the center land portion in which the center cover layer is not disposed, and a tread average thickness C in second land portions located further on an outer side than the center land portion in the tire width direction and located adjacent to the center land portion satisfying a relationship A<B<C, wherein
a ratio A/B between the tread average thickness A and the tread average thickness B is 0.70 or more and 0.90 or less.