i was wondering if anyone has wheel spacers with aftermarket wheels... what fits? I have 20mm spacers on the back and 15mm spacers in the front, but i run on stock wheels and i love how it looks with the spacers... would 18x7.5 fit without rubbing and what offset would it have to be?

 

45-50 offset would be fine for a 7-8 inch wide wheels with your spacers. aftermarket wheels for Subarus will fit that criteria.