There are many benefits to using a tire changer and balancer combo. First, it saves time by allowing you to change and balance your tires at the same time. Second, it is more convenient because you don't have to go to two different places to get your tires changed and balanced. Third, it is more cost effective because you only have to pay for one service instead of two. Finally, it ensures that your tires are changed and balanced correctly, which can prolong the life of your tires.