Im looking at buying a set of wheels for my impreza but I cant seem to find info on if that size will fit. They seller thinks they are +40 or 45 offset. Thanks

I can only tell you that I have 205/55-16 tires on 16x7 (offset 55mm) RS rims on my '97 Impreza wagon. I have about a 1/4 inch of clearance on the rear between the tire and strut. Based onthat I think your 225/16 would rub; not sure what effect the offset would have. Only way to tell is to try a test fit; the rears would be the most critical.

If 205's are close to rubbing then 225's would probably not be good for me I go camping a lot and frequently load gear into my car I would most likely rub. Thanks and I'm starting to think that buying rims with the same offset as factory would be smarter I read that it can take a toll on the bearings having wheel with a lot different offset, not sure if thats true but seems possible.

You are correct about sticking to the OEM offset. Subaru is typically close to 55 mm and bearing loadings are built around that. For some reason or other, most after market 5x100 rims have a 38 mm offset. They will certainly fit, but I wonder about their long term reliability in our Subarus.