Pneumatic tire
A pneumatic tire is provided, including: an annular-shaped tread portion extending in a tire circumferential direction; a pair of sidewall portions disposed on both sides of the tread portion; and a pair of bead portions disposed on an inner side in a tire radial direction of the sidewall portions; wherein a band-like sound absorbing member is adhered on an inner surface of the tread portion in the tire circumferential direction; and the band-like sound absorbing member has a plurality of cuts extending in two mutually intersecting directions, and of the cuts, a cut extending in one direction is a cut extending parallel with regard to a tire lateral direction or tire circumferential direction.
1. A pneumatic tire, comprising:
an annular-shaped tread portion extending in a tire circumferential direction;
a pair of sidewall portions disposed on both sides of the tread portion; and
a pair of bead portions disposed on an inner side in a tire radial direction of the sidewall portions; wherein
a band shaped sound absorbing member is adhered on an inner surface of the tread portion in the tire circumferential direction;
the band shaped sound absorbing member has a plurality of cuts extending in two mutually intersecting directions, and of the cuts, a cut extending in one direction is a cut extending parallel with regard to a tire lateral direction or tire circumferential direction, an absolute value of a difference in angles of the cuts extending in the two mutually intersecting directions being from 15° to 90°;
the plurality of cuts have a closed state which transitions to an open state when the pneumatic tire deflects during a rolling motion;
the cut extending in one direction extends parallel with regard to the tire circumferential direction; and
a depth d of the cuts is from 55% to 80% with regard to a thickness D of the band shaped sound absorbing member.
2. The pneumatic tire according to claim 1 , wherein an interval t of the cuts is from 5% to 90% with regard to a width Ws of the band shaped sound absorbing member.
3. The pneumatic tire according to claim 1 , wherein a volume of the band shaped sound absorbing member is from 10% to 30% with regard to luminal volume of the tire.
4. The pneumatic tire according to claim 1 , wherein the band shaped sound absorbing member has a missing portion in at least one section in the tire circumferential direction.
5. The pneumatic tire according to claim 2 , wherein a volume of the band shaped sound absorbing member is from 10% to 30% with regard to luminal volume of the tire.
6. The pneumatic tire according to claim 5 , wherein the band shaped sound absorbing member has a missing portion in at least one section in the tire circumferential direction.
7. The pneumatic tire according to claim 1 , wherein a volume of the band shaped sound absorbing member is from 22% to 30% with regard to luminal volume of the tire.