Patent ID: 6213182
Filing Date: 2001-04-10
Classification: B60C,Y10T

Abstract:
A pneumatic tire comprisinga tread portion,a pair of sidewall portions,a pair of bead portions each with a bead core therein,a carcass comprising at least one carcass ply of cords, anda belt disposed radially outside the carcass in the tread portion and having axial edges,said at least one carcass ply comprisingan axially innermost part extending through one of the sidewall portions from one of the edges of the belt to the axial inside of one of the bead cores; andan axially outermost part extending through the sidewall portions from the edge of the belt to the axial outside of the bead core,rubber thickness T0 measured at the maximum tire section width point P in the sidewall portion from the outer surface of the tire to the carcass cords in the axially outermost part being not less than 0.2 mm but not more than 1.5 times the diameter D of the carcass cords;wherein in a region Y1, which is defined as extending radially inward and outward from the maximum tire section width point P by a distance L2 of at least 5% of the section height H of the tire,rubber thickness T measured from the outer surface of the tire to the carcass cords in the axially outermost part is substantially constant, rubber thickness Tc measured at a middle point Pc between a tread edge TE and the maximum tire section width point P along the tire outer surface is in the range of from 2 to 4 times the rubber thickness T0 at the maximum tire section width point P, andrubber thickness Te measured at the tread edge TE is in the range of 6 to 15 times the rubber thickness T0.