Patent classifications
B60C2011/0365
Pneumatic Tire
A pneumatic tire comprising circumferential main grooves, a land portion defined by the circumferential main grooves, and a plurality of lug grooves disposed in the land portion that open to the circumferential main grooves. The land portion comprises notch portions formed on opening portions of the lug grooves and chamfered portions formed on edge portions of the notch portions. The notch portions have an edge portion with a V-shape projecting in a tire circumferential direction. A maximum width W2 of the notch portions and a width W3 of the chamfered portions have the relationship 0.30≦W3/W2≦1.80.
CAR TYRE
All season tyre (1) for SUVs and Crossovers; the tyre having a tread band (7) provided with a plurality of sipes (21,22,23,24,25,26) regularly and homogeneously arranged, and a wide central region (LI) provided with three rows of blocks, at least wo of which are provided with transverse grooves only slightly inclined relative to a direction orthogonal to the equatorial plane. The central region (LI) lacks circumferential annular portions having a low void-to-rubber ratio located adjacent to central annular portions having a medium or high void-to-rubber ratio.
TIRE
The tire includes a lateral groove formed in a tread section and extending in a tire width direction. One groove wall forming the lateral groove includes an inclined surface with curved shape. The inclined surface has an inclination angle, the inclination angle being an angle with respect to a tire radial direction from a groove bottom to a tread surface in a cross section perpendicular to a tire axial direction, that gradually increases from an inner side in the tire width direction on a tire equatorial line side to an outer side in the tire width direction.
TIRE
A tire 1 in which shoulder land portions 7 are included in a tread portion 2. Provided in the shoulder land portions 7 are a plurality of first shoulder lateral grooves 10 that extend inward in the tire axial direction from tread edges Te and terminate within the shoulder land portions 7. The first shoulder lateral grooves 10 include first groove portions 11 that extend in the tire axial direction from the tread edges Te, second groove portions 12 that extend farther inward in the tire axial direction than the first groove portions 11 and moreover extend at different positions in the tire circumferential direction than the first groove portions 11, and third groove portions 13 connecting the first groove portions 11 and the second groove portions 12.
TIRE
A tire comprises a tread portion comprising a circumferentially arranged blocks divided by lateral grooves. Each block has a block side wall and a block tread. Each lateral groove comprises an axially outer first portion, an axially inner second portion, and a connect portion at which the first portion and the second portion are connected with each other so that each block is provided with a convex corner portion which is convex toward the outside of the block at the connect portion. In the convex corner portion, the block side wall comprises a first side wall extending along the first portion, a second side wall extending along the second portion, and a substantially triangular third side wall intersecting the first side wall, the second side wall and the block tread. The third side wall terminates radially outside the groove bottom of the lateral groove.
Tyre
To improve uneven wear resistance performance while maintaining drainage performance. A tyre is provided with a plurality of inclined grooves in a tread portion. Each of the inclined grooves includes a first portion arranged on a crown region side, a second portion arranged on a shoulder region side, and a third portion connecting between the first portion and the second portion. In a ground contacting surface of the tread portion, the third portion has a groove width smaller than the first portion and the second portion. The third portion includes an outer portion arranged on the ground contacting surface side and an inner portion arranged radially inside the outer portion. The inner portion has a groove width larger than the outer portion.
Tire
A tire has a tread portion including a first land portion including first and second circumferential edges and and a tread surface. On the first land portion, curved grooves are provided in a tire circumferential direction. Each curved groove extends from a first end on the first circumferential edge side, terminates at a second end within the first land portion, and includes first and second curved portions and on the first end and second end sides, respectively. The first curved portion is an arc curve with a radius of curvature having a center on the first circumferential edge side of the curved groove. The second curved portion is an arc curve with a radius of curvature having a center on the second circumferential edge side of the curved groove.
Tire
A tread portion has an outer tread end that is positioned on an outer side of a vehicle when mounted to the vehicle, a plurality of circumferential grooves that extend continuously in a tire circumferential direction, and a plurality of land portions that are defined by the circumferential grooves. The circumferential grooves include an outer circumferential groove that extends adjacently to a tire equator in a region closer to the outer tread end than the tire equator is. The land portions include an outer shoulder land portion that is defined between the outer circumferential groove and the outer tread end so as to continuously extend therebetween in a tire axial direction, and that has the largest width in the tire axial direction among the land portions. The outer shoulder land portion has a first outer lateral groove that extends inward in the tire axial direction and terminates in the outer shoulder land portion. An angle of the first outer lateral groove relative to the tire axial direction at a terminating position in the outer shoulder land portion is 0 to 20°.
TIRE
A tire includes a first circumferential main groove 11 and a second circumferential main groove 12 in a tread surface 1. A resonator 21 is formed in an intermediate land portion 20 partitioned between the first circumferential main groove and the second circumferential main groove. The resonator has an auxiliary groove 211 whose both ends terminate within the intermediate land portion. The groove depths D1 of the first and second circumferential main grooves are 50% or less of the groove widths W2 of the first and second circumferential main grooves, respectively. The groove width W3 of the auxiliary groove of the resonator is 80% or less of the groove depth D1 of the first circumferential main groove.
TIRE
A tire includes a plurality of side blocks arrayed at a predetermined interval in a tire circumferential direction in a buttress portion. The side blocks include a short portion and a long portion arrayed in a Y shape and a slit that defines a connection portion of the short portion and the long portion and are disposed with a top portion of the Y shape facing toward an inner side in a tire radial direction. A radial height Hb of the side blocks is in the range 0.20≤Hb/SH≤0.50 with respect to a tire cross-sectional height SH.