Phenomenon: Straight bead sag diagnosis: Straight bead sag hi bead cord fabric joint atanga lo chhuak a ni. Joint part hi local reinforcement a ni a, ruang hi a ni. Tire inflated a nih chuan he area hian joint nei lo area aiin boruak a tizau lo zawk a, tyre .
A sirte chu a then a tlakbuak a ni. Dik tak chuan straight bead depression zawng zawng hian tire him taka hman a nghawng dawn lo. A ruang ruh chu ruang hmun pahnih inkara ruh inzawmna nghet tak hmuh theihna turin a ruhro (arcass material) inzawmkhawm (polyester cord) inzawmkhawm a ni. Sidewall-a straight bar depression thlentu tyre joint-a a then chu tire ruang a\anga a chak tawk lo hle a, tire him taka hman a nghawng dawn lo. A tlangpuiin, rulhut zung (carcass cord) avanga dents awmte chu tire sir lehlama awmna nen a inmil a ni. Hei hi cord joint problem avanga dents pangngai te hi a awm em tih tehna a ni bawk. Normal straight sidewall depressions bakah hian condition dang hnuaia depression awm thin te hian car neitute chu a ngaihven tawk dawn a ni. Chumi zingah chuan tire bead cut avanga tire failure, tire bead impact damage emaw rubber degradation emaw pawh a ni thei.
Thurawn: Tire chu hydrocarbon, solvent emaw acid thenkhat emaw nena inzawm tir suh. Heng thilte hian tyre rubber part an tawn hnu chuan hun rei lo te chhungin rubber-ah chemical a inthlak danglam ang a, chu chuan tire chu a ti hring ang a, a ti nem ang a, a sticky ang.