Xuduudaha ugu muhiimsan ee giraangiraha baabuurta waa: cabbirka giraangiraha, PCD, ET-ka offset, godka dhexe
Cabbirka taayirku wuxuu ka kooban yahay laba cabbir: dhexroorka taayirka iyo ballaca taayirka. Waxaa jira 15×6.5; 15×6.5JJ; 15×6.5J; 1565, iwm., "15" ee hore wuxuu matalaa dhexroorka taayirka, kaas oo matalaya dhexroorka taayirka xarunta taayirka waa 15 inji, "6.5" (ama 6.5J, 6.5JJ, 65) ee gadaalna wuxuu matalaa ballaca taayirka, kaas oo matalaya ballaca taayirka xarunta taayirka waa 6.5 inji. Cabbirka taayirka badanaa waxaa laga heli karaa xarfaha ku yaal gadaasha taayirka.
PCD: Waxaa loola jeedaa dhexroorka wareegga godka ee godka giraangiraha. Hababka matalaadda sida 5×114.3, 10×100/114.3, "5" macnaheedu waa tirada godadka boolalka, taasoo la macno ah inay jiraan 5 godad boolal ah. "114.3" macnaheedu waa in dhexroorka wareegga godka boolalka uu yahay 114.3mm.
Kala-goynta: (oo sidoo kale loo yaqaan ET) waa masaafada u dhaxaysa dusha sare ee rakibidda iyo xariiqda dhexe ee giraangiraha. Halbeeggan waxaa badanaa laga heli karaa dhabarka dambe ee xarunta. Kala-goynta waxaa loo isticmaalaa in lagu hagaajiyo saldhigga giraangiraha iyo in la hubiyo in giraangiruhu aysan faragelin jidhka gaariga.
Godka dhexe: Waa godka weyn ee ku yaal bartamaha xarunta taayirada. Ogsoonow in cabbirka godka dhexe laga cabbiro gadaal si uu u noqdo xogta saxda ah. Gaadhi kastaa wuu ka duwan yahay, BENZ guud ahaan waa 66.6MM, BMW guud ahaan waa 72.6MM. Haddii godka dhidibka taayirada ee geesku uu weyn yahay, waa inaad isticmaashaa qoor god dhexe ah, haddii kale taayirku wuxuu ku ruxi doonaa xawaare sare.
Waqtiga boostada: 03-12-21