Patent ID: 6330897
Filing Date: 2001-12-18
Classification: B60C,Y02T,Y10T

Abstract:
A pneumatic tire comprising a pair of bead portions each having a bead filler and a bead core, a carcass layer toroidally extended between the bead portions, a tread disposed at a crown portion of the carcass layer, and at least two belt layers arranged at the inside of the tread,the carcass layer having one or plural carcass plies, end portions of the carcass plies being turned up at the respective bead portions, and ends of the turned-up portions of the carcass plies being disposed at a height of 10 to 40 mm from the bottom of the respective bead portions,wherein at least one of the bead fillers, the carcass plies and the belt layers comprise a diene-based rubber composition,and the diene-based rubber composition comprises:a rubber component selected from the group consisting of butadiene rubber, styrene-butadiene rubber, isoprene rubber, natural rubber and ethylene-propylene-diene rubber;a sulfur vulcanizing agent in an amount of 2 to 10 parts by weight per 100 parts by weight of the rubber component; anda vulcanization accelerator represented by the following general formula: ##STR3##wherein R.sup.1 represents a hydrogen atom, an alkyl group, or an aryl group, and R.sup.2 represents an alkyl group or an aryl group when R.sup.1 represents a hydrogen atom, and represents a hydrogen atom, an alkyl group, or an aryl group when R.sup.1 represents an alkyl group or an aryl group, in an amount of 0.2 to 8.0 parts by weight per 100 parts by weight of the rubber component.