On the other hand, V belts are used to give support to your vehicle so that there is proper movement and the life of your vehicle increases. They act as an important component for your vehicles, therefore it is important that you know every detail about these belts. There are number of V belts available and each one of them has their own functions and use. You should also know the right time when you should change the v belt in your vehicle. Sometimes when people are not aware of changing the belts it can cause damage to the machinery.