Patent ID: 8151843

Claim:
A pneumatic tire comprising: bead portions including an inner bead core located on an inner side when vehicle-mounted and an outer bead core located on an outer side when vehicle-mounted; at least a carcass layer and a tread portion disposed in a direction from a tire-radially inner side to a tire-radially outer side; and a belt layer provided in a tire-radial direction of the carcass layer, wherein in a section in a tire-width direction, assuming as a reference a tire centerline making right angles with a bead line interconnecting a center of the inner bead core and a center of the outer bead core, and passing a center of the bead line, an outer ground-contact area as a ground contact area between a road surface and the tread portion to be outside when vehicle-mounted is wider by 5 to 15% than an inner ground-contact area as a ground contact area between a road surface and the tread portion to be inside when vehicle-mounted, and wherein in the section in the tire-width direction, an outer carcass periphery length as a distance along a carcass centerline passing a center of the carcass layer, from a crossing point where the carcass centerline and the tire centerline cross, to a point where an inner end of the outer bead core is approached closest, is longer by 0.5 mm to 10 mm than an inner carcass periphery length as a distance along the carcass centerline from the crossing point to a point where an inner end of the inner bead core is approached closest, the pneumatic tire further comprising a side wall portion provided on an outer side in the tire-width direction of the carcass layer, wherein in the section in the tire width-direction, the outer carcass periphery length has in comparison with the inner carcass periphery length an elongate part located at an inner side in the tire-width direction of the side wall portion, the elongate part measured from a line perpendicular to the carcass centerline and tangent to an axially outer edge of a radially innermost belt layer to a line perpendicular to the carcass centerline and tangent to an edge of a turnup portion of the carcass layer turned up from axially inside to axially outside around the outer bead core.