1. Ukuze kuqinisekiswe ukhuseleko oluphezulu kunye nokuthembeka, kungakhathaliseki ubudala besithuthi, kuyimfuneko ukujonga rhoqo amavili - ukunikela ingqalelo kwiimpawu zesilumkiso zangaphambili zokugqoka, kubandakanywa nayiphi na ingxolo ye-friction ngexesha lokujikeleza okanye ukuncipha okungaqhelekanga kwamavili adibeneyo amisiweyo ngexesha lokujika.
2. Ukuba uva ingxolo evela kwindawo yokuthwala i-rim, into yokuqala kukuchonga indawo apho ingxolo yenzeka khona. Maninzi amalungu ashukumayo anokuvelisa ingxolo, kwaye kuyenzeka nokuba amanye amalungu ajikelezayo adibane namalungu angajikeleziyo. Ukuba kuqinisekiswa ukuba ingxolo ivela kwi-bearing, i-bearing inokonakala kwaye idinga ukutshintshwa.
3. Ngenxa yokuba iimeko zokusebenza zokungaphumeleli kokuthwala kumacala omabini okubangelwa yi-rim yevili langaphambili zifana, nokuba ibhere enye yonakaliswe, kucetyiswa ukuba uyitshintshe ngababini.
4. Iibheringi zeerimu zamavili zinovakalelo kwaye zifuna indlela echanekileyo kunye nezixhobo ezifanelekileyo kuyo nayiphi na imeko. Ngexesha lokugcinwa, ukuthutha, kunye nokufakwa, iinqununu zeebheringi akufanele zonakaliswe. Ezinye iibheringi zifuna uxinzelelo olukhulu lokucinezelwa, ngoko ke izixhobo ezikhethekileyo ziyafuneka. Qinisekisa ukuba ubhekisa kwincwadana yokwenziwa kwesithuthi.