I had rubbing in the back with 215/35 on 18x9 et22 with unrolled fenders at stock height. 215/45 on 17x9 et26 is a bit taller but a bit further in, you might be able to get away with only a small roll (roll lip flat). I have my quarters rolled really aggressively now and no rubbing issues. Coilovers going on next week, and then we'll see how low I can go without rubbing.
S52|ZF|TRM Coilovers 670/895|Staggered 18" 5's