Pneumatic tire and method for manufacturing same
View Patent ↗A pneumatic tire includes an annular 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 inward of the sidewall portions in a tire radial direction, and the sidewall portions have an average thickness set to range from 1.0 mm to 3.0 mm at a deflection region of each sidewall portion including a tire maximum width position. The bead portions have a bead base width set to range from 115% to 130% of a tread development width of the tread portion.
1. A pneumatic tire, comprising:
an annular 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 inward of the sidewall portions in a tire radial direction, the bead portions include a bead core and a bead filler radially outward of the bead core;
the sidewall portions having an average thickness set to range from 1.0 mm to 3.0 mm at a deflection region of each sidewall portion including a tire maximum width position;
the bead filler having a height of from 20% to 30% of a tire-cross-sectional height; and
the bead portions having a bead base width set to range from 115% to 130% of a tread development width of the tread portion;
wherein the pneumatic tire is mounted on a standard rim, and the bead base width is 1 inch to 3 inches larger than a rim width of the standard rim.
2. A method for manufacturing a pneumatic tire comprising an annular 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 inward of the sidewall portions in a tire radial direction, the bead portions including a bead core and a bead filler radially outward of the bead core, the sidewall portions having an average thickness set to range from 1.0 mm to 3.0 mm at a deflection region of each sidewall portion including a tire maximum width position, the bead filler having a height of from 20% to 30% of a tire-cross-sectional height, the method comprising:
vulcanizing the pneumatic tire in a mold formed such that the bead portions have a bead base width set to range from 115% to 130% of a tread development width of the tread portion;
wherein the mold is formed such that the bead base width is 1 inch to 3 inches larger than a rim width of a standard rim.