What wheel size is needed for 50mm over fenders/30mm fronts

Hey guys as the title says looking to run 50mm over fenders want an 18" wheel and 30mm fronts. does anyone know the required size/offset to have them sit flush? I’m new to the offset game hopefully I can get some help. My car is a 95 s14 zenki

check wheel fitment thread on here.
or on zilvia… (their wheel fitment thread) that will solve all your questions…
just scroll through… find something you like and specs will be there…

Oh I’ve tried a lot of guys are running spacers to it throws off a lot of my ideas. I’m trying to learn this offset math stuff just thought if ask if any local gurus knew it

just subtract the thickness of a spacer from the wheel offset ie, a 17x9+20, with a 20mm spacer becomes a 17x9+0