This is my favorite wheel fitment calculator. It compares wheels not just to eachother, but also to the body work of your car. You'll see that you can enter your own measurements for the fender, wheelwell, suspension and such. Start with your OEM sizes, add your personal measurements, then use the other wheel to test out your desired sizes. Don't forget to consider the budget increase for tires as you get wider and lower in profile, directional tires and staggered are even more expensive since you can't rotate them as much.
https://www.wheel-size.com/calc/