Dab tsi yog cov tsom iav yog li cas lawv ua haujlwm?
Cov nres nres yog cov kev sib txhuam ua haujlwm nrog koj lub tsheb nres (lossis cov nruas) los tsim kev sib txhuam tsim nyog rau kev ua kom qeeb lossis nres lub tsheb. Thaum koj nias tus nres pedal, hydraulic siab siab yuam kom cov nres nres kom kaw cia ntawm qhov discs, tsim kev sib txhuam uas ua rau lub log kev sib hloov.
Nres ncoo los nyob rau ntau hom kev tsim, suav nrog cov xim hlau, cov khoom siv tsis zoo, txhua qhov kev pab cuam tshwj xeeb rau kev tsav tsheb txawv. Tsis hais hom twg, cov haujlwm tseem ceeb ntawm txhua daim npav nres yog txhawm rau tswj kom muaj kev sib txhuam siab thiab kav ntev, ua kom muaj txiaj ntsig zoo braking.
