Bwilson280

Well right now, I'm running stock suspension with a 16x8 +0 with a 225/50/16. I was hoping to get a 16x9 but I just can't figure out the offset

This is a question I've been trying to find the answer to for a while but can't seem to find it on any forums. I have a 1977 280z Datsun. Finishing my restoration and would like to know what is the absolute widest it is possible wheel/tire combo to go on a 280z without running flares and cutting. If you could leave full specs including offsets as well. Thank you.