Will a 215/60r15 tire with a 15x7 wheel fit?

They'll look good! Of course I'm not a fan of the wheels that are on there now at all, they look like they should be on an early 90's Ford Ranger :p. And I may be biased. These are legend 5's on my Challenger, although these are 17x9's.



Summit carries them
https://www.summitracing.com/parts/vsw-141h5765gm6/overview

And with a 15x7" and 4.25" of backspace you should be able to run 225/60/15's if you want.
Yeah I was thinking about running a 225/60r15 with it. And I'm not really a fan of the wheels that are on it now either. By the way, I really like your Challenger. Looks good!