18" wheels

There’s a lot of things that go into it, the ride height on your car is probably the biggest thing, followed by Ma Mopars relatively loose body tolerances.

But in general, if you keep the height below 26” and don’t go wider than about a 245 or 255 and run between 5.25” and about 5.7” of backspace that should work


Only thing with 17’s is the outer tie rod end limits the backspace, about the most you can do with most 17’s is about 5.6”-5.7”. With that backspace and a 17x8 you can manage a 245 or 255
My concerns are cost (18s are pricey), and having room for sidewall on an A with the short tires.