There is no such thing as a defense cap. Well, not one that you can reach in practice, anyway.
The World of Warcraft Armory
I am sitting at 550 defense (739 def rating)
And currently I have enchantwise (for defense anyway)...
+22 def on chest
+20 def on shield
+16 def on cloak
and i am not sure whether being that far over the cap is a good thing, or if I should trim some def from one or two of those enchants. And if so what should i replace them with?
I'd say keep you defense where its at, because as a warrior you benafit very well from defense gaining + to your dodge, parry, and shield block.
You're really not that much over. Alot of upgrades from naxx and beyond don't have the defense that some heroic and crafted items do so your defense may drop. Keep it where it's at... defense is guude.
True Knowledge exists in knowing that you know nothing.
Agg's tanking guide
aight sounds good to me, thanks for the input!
If you're asking what stat to look at next though, expertise soft cap will do your threat well.