Will these wheels fit with no suspension mods or adjustments? 17x8 +45 Enkei rpf1. Intended tire size is 225/55 or 235/55. Is there a chart or calculator for wheel fitment for these cars?

Those wheels are pretty small so yes, they'll fit no problem. Also if you look towards the top of the page in this very thread you'll find a wheel/tire calculator link in big, easy-to-read red letters.

I actually used the calculator and cant seem to interpret weather or not anything will fit. My main concern is if the additional width will require a different offset. As far as I know the oem 17" rims are 7.5 width and +45 offset, so the 8" wide wheels would have all the additional width on the inside?