S13 wheel fitment / offset

Hello

I need help on wheel offset for a '92 240SX with

30mm front wider fenders

and

50mm wide rear fenders

what is the biggest wheel width and offset for an 18 inch or 19 inch setup ? any input will be greatly appreciated.


thanks for reading my thread.

do u want the wheels to be flush? is so u want a really low number around 18 max and lower