What exactly are you looking to do? Huge rims with very low profile tires might look cool in some circles but in real world daily driving they can present issues. Its a lot easier to damage a rim for instance, and your suspension won't work as well as it could. Unsprung weight is a big concern. Big heavy wheels don't allow the suspension to respond to pavement irregularities as fast it could with lightweight wheels. You will probably lose a bit of gas mileage.Depending on what size the rims are, you may need to roll or pull your fenders to make them fit. In addition, again depending on what you get, you may need a second set of rims and tires for winter months. Low profile performance tires are not good at all in the snow, and many lose much of their grip once you get into colder temperatures.I've heard a lot about tire swaps so I was wondering: I have the 2016 Mazda 3 i-Sport so are new, larger tires worth it? What would they actually do? How much would they run me?