Aivili lentsimbi yemotoyinxalenye yentsimbi yethayara emile okwebhareli, efakwe embindini wethayara exhasa iprofayili yangaphakathi yethayara. Ikwaziwa nangokuthi iirim, iirim, amavili, iintsimbi zamatayara. Ihabhu ngokwebubanzi, ububanzi, iindlela zokubumba, iintlobo ezahlukeneyo zezinto. Ubungakanani behabhu bububanzi behabhu, sihlala siva abantu besithi ihabhu eyi-intshi ezili-15, ihabhu eyi-intshi ezili-16 ibinzana elinjalo, apho i-intshi ezili-15,16 ibhekisa kubungakanani behabhu. Ngokubanzi emotweni, ukuba ubungakanani behabhu yamavili bukhulu kwaye umlinganiselo othe tyaba wethayara uphezulu, unokudlala impembelelo entle kakhulu yoxinzelelo kumbono, kwaye uzinzo lolawulo lwesithuthi nalo luya kwandiswa, kodwa ke kukho iingxaki ezongezelelweyo zokusetyenziswa kwepetroli okwandisiweyo. Kukho iiparameter ezininzi eziphambili kwi-wheel machining, ekucutshungulweni kufuneka kuqwalaselwe ukulawula iiparameter kuluhlu olufanelekileyo, kungenjalo kuya kuchaphazela ulwakhiwo kunye nokusebenza kweIvili leRim yentsimbi.