Although it doesn't matter what breed your dog is because he's beautiful that isn't a wolf or chow coat. Not to mention the ears are completely different from a wolf.
Wolves also generally have smaller ears with lots of "fluff" in them.
I'm willing to bet your dog is more then 90% German Shepherd you can see it in the coloring. Although it's not quite as common as the black/tan. I can see chow, maybe akita, but no wolf. Wolf mix will have longer thinner snout, close set eyes that aren't so round, overall rangier build. The ears/muzzle remind me more malamute maybe? I believe I saw a GSD/Mal that looked almost exactly like that.
Bicolor German Shepherds are probably my favorite coloring of the breed. They're stunning!
------
Young bicolored GSD: