1. Bias tire pangngai chu bias tyre pangngai, inner tube nei structure a ni. Bias tyre hi tread, ply, buffer layer leh bead te a ni ber. Ply leh buffer layer ordinary bias tire cord te chu an inzawm khawm a, tread center line-ah degree 90 aia tlem lo angle-ah an dah a ni.
2. Radial tire plies te chu angle 90 degree emaw 90 degree emaw velin an inrem a, chu chu tread center line nen a inmil a, chu chu ply tires meridian section nen a inmil a, leia meridian ang deuh a ni a, chuvangin radial tyre an ti a ni. Plies te inrem dan avang hian radial tire plies zat chu bias tyre pangngai nen khaikhin chuan 40%{{4}% velin a tlahniam thei a ni. Radial tyre hi circumferential direction-ah rubber hmang chauh a inzawm a, chuvangin lirthei khalh laiin tangential force lian tak siam chhuah chu tuar thei tur leh tire rigidity tihchangtlun nan radial tire hian meridian section nen angle lian takah cord layer engemaw zat a nei bawk (angle telh chu 70- 75 a ni), belt layer chu buffer belt ang chiah a ni a, stretch awlsam tak a awm lo. Belt layer hi a tlangpuiin puan cord (glass fiber, polyamide fiber ang chi) emaw steel cord emaw hmanga siam a ni a, a chakna sang leh tensile deformation hniam tak a ni.