| CPC B60C 11/0304 (2013.01) [B60C 3/04 (2013.01); B60C 11/13 (2013.01); B60C 2011/0353 (2013.01); B60C 2011/0381 (2013.01)] | 12 Claims |
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1. A tire comprising a mounting direction indicator configured to indicate a tire mounting direction with respect to a vehicle, the tire comprising:
a first circumferential groove and a second circumferential groove extending intermittently in a tire circumferential direction,
the second circumferential groove being located further on an inner side than the first circumferential groove in a vehicle width direction in a state in which the tire is mounted on the vehicle,
a groove volume V1 of the first circumferential groove and a groove volume V2 of the second circumferential groove having a relationship V1<V2, and
each of the first and second circumferential grooves including a plurality of groove portions arranged discontinuously in a row in the tire circumferential direction and extending intermittently in the tire circumferential direction, wherein
no other grooves or recess portions having an opening area of greater than 40 mm2 are provided in a tire ground contact region,
each of opening areas of the groove portions constituting the first and second circumferential grooves is in a range of 200 mm2 or more and 340 mm2 or less,
a groove area ratio of a tire ground contact region is in a range of 3.0% or more and 5.0% or less,
maximum groove depths of the first and second circumferential grooves are in a range of 2.5 mm or more and 5.0 mm or less, and
distances D1, D2 from a tire equatorial plane to groove center lines of the first and second circumferential grooves satisfy relationships 0.05<D1/TW<0.45 and 0.05<D2/TW<0.45 with respect to a tire ground contact width TW.
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11. A tire comprising a mounting direction indicator configured to indicate a tire mounting direction with respect to a vehicle, the tire comprising:
a first circumferential groove and a second circumferential groove extending intermittently in a tire circumferential direction,
the second circumferential groove being located further on an inner side than the first circumferential groove in a vehicle width direction in a state in which the tire is mounted on the vehicle,
a groove volume V1 of the first circumferential groove and a groove volume V2 of the second circumferential groove having a relationship V1<V2, a maximum groove width W1 of the first circumferential groove and a maximum groove width W2 of the second circumferential groove having relationships 0.020≤W1/TW≤0.080 and 0.020≤W2/TW≤0.080 with respect to a tire ground contact width TW,
each of the first and second circumferential grooves including a plurality of groove portions arranged discontinuously in a row in the tire circumferential direction and extending intermittently in the tire circumferential direction,
no other grooves or recess portions having an opening area of greater than 40 mm2 are provided in a tire ground contact region,
each of opening areas of the groove portions constituting the first and second circumferential grooves is in a range of 200 mm2 or more and 340 mm2 or less,
a tire cross-sectional height SH having a relationship 0.20≤SH/SW≤0.70 with respect to a total tire width SW, and
a tire ground contact width TW having a relationship 0.90≤TW/SW≤0.98 with respect to the total tire width SW, wherein
maximum groove depths of the first and second circumferential grooves are in a range of 2.5 mm or more and 5.0 mm or less, and
distances D1, D2 from a tire equatorial plane to groove center lines of the first and second circumferential grooves satisfy relationships 0.05≤D1/TW≤0.45 and 0.05≤D2/TW≤0.45 with respect to the tire ground contact width TW.
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12. A tire comprising a mounting direction indicator configured to indicate a tire mounting direction with respect to a vehicle, the tire comprising:
a first circumferential groove and a second circumferential groove extending intermittently in a tire circumferential direction,
a pair of bead cores,
a carcass layer extended across the pair of bead cores,
a pair of cross belts disposed on an outer circumference of the carcass layer, and
tread rubber disposed on an outer side of the pair of cross belts in a radial direction,
the second circumferential groove being located further on an inner side than the first circumferential groove in a vehicle width direction in a state in which the tire is mounted on the vehicle,
a groove volume V1 of the first circumferential groove and a groove volume V2 of the second circumferential groove having a relationship V1<V2,
a maximum groove width W1 of the first circumferential groove and a maximum groove width W2 of the second circumferential groove having relationships 0.020≤W1/TW≤0.080 and 0.020≤W2/TW≤0.080 with respect to a tire ground contact width TW,
a width Wb of a wider cross belt of the pair of cross belts having a relationship 0.98≤Wb/TW≤1.10 with respect to a tire ground contact width TW, and
each of the first and second circumferential grooves including a plurality of groove portions arranged discontinuously in a row in the tire circumferential direction and extending intermittently in the tire circumferential direction,
no other grooves or recess portions having an opening area of greater than 40 mm2 being provided in a tire ground contact region, wherein
each of opening areas of the groove portions constituting the first and second circumferential grooves is in a range of 200 mm2 or more and 340 mm2 or less, wherein
maximum groove depths of the first and second circumferential grooves are in a range of 2.5 mm or more and 5.0 mm or less, and
distances D1, D2 from a tire equatorial plane to groove center lines of the first and second circumferential grooves satisfy relationships 0.05≤D1/TW≤0.45 and 0.05≤D2/TW≤0.45 with respect to the tire ground contact width TW.
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