Why did you spec into utility instead of defense? seeing as garen is all physical attacks with no range, you're gonna get hit quit a bit. also, get courage earlier (just one level) so you can use the 35% dr. Extremely useful when turret diving or fighting a nuke. Also boots of swiftness are better than zerkers. attack speed isnt all that useful to garen. also if you're using exhaust why not put a point in that instead of the ability power spot?

I dont like the idea of getting Hextech Gunblade due to the useless AP nor Greaves , but its a great build. I wont upvote nor downvote.

this build makes me got 10-0 21-2 15-0 19-1 22-0
and i get good scores almost every game its rare that i fail with garen