Look at low offset threads on Honda tech and other sites. Familiarize yourself with offset, backspacing, etc of wheels.
IMO: 15s are too small for EKs, 16s are perfect, 17s are pushing it on the bigger side.
I'm currently running 16x8.5 +20 on my wagon w/ 165/50s
I've run 15x8 +0 on my...