Well my Druid-bear is get a piece or two upgraded every night (which is usual for a "new 80" character".
Got 1 tank upgrade last night doing Heroic UP. According to Wow-heroes my tank gear score is almost 1600.
Sounds about ready to try tanking some normal level 70+ instances. I have been practicing my Druid tanking techniques while questing. Ranged pulling, Feral charge pulling, etc. All to make sure my head is learning which buttons to push to a) keep aggro, b) do damage, 3) keep myself alive if needed.
I was able to solo the level 74-76 elites in Dragonblight without any issues.