Basically with a larger wheel you’ll end up needing a discount tire with a smaller aspect ratio. This can reduce turning and hamper handling of the vehicle. It can add to the wear and tear of the tires, and other components. Plus, they larger sidewalls actually aid in the comfort and handling of the vehicle. In fact they have an adverse effect on the suspension and reduce your fuel mileage.
It goes without saying, that this is truly something you will need to research. You might think you have saved money by getting a discount tire only to spend more by fixing other issues. Never sacrifice safety or handling just for the sake of a good appearance.
Source: www.dieselarmy.com
6. Try To Buy A Set Or More, Not Just One Discount Tire
I have been looking at the potential saving and considerations with getting a discount tire. But really you should never try to save money by getting a single discount tire. People will replace just the tire that is the worst, but that only creates other potential issues.