raid requirements
These are the basic gear score cut-offs for if you're looking to join raids. Note that this is just a general outline and individual raids will have their own requirements. Some people look for higher-geared players for content that can be cleared with less for the sake of time and efficiency. This doesn't mean that that raid isn't doable with less, it means that that specific run isn't for you.
That being said...
ToC10: 4.8
ToC25: 5.2
RS10 / ICC10: 5.4
RS25 / ICC25: 5.6
ToGC / ICC25HC / RS25HC: 6.0
As a tank at lower GS your primary goals are to A) be defense-capped B) get somewhere close to hit cap without sacrificing too much stamina and C) be aware of your job on any given fight so you don't end up taking unnecessary damage with your already weak stats (though getting oneshot by the easiest mechanics is also part of the learning curve). Everything else will be pretty much as good as it gets for the time being and you just have to make do with that. Learn to accept that the 6.5 mage in your pug group will always grab aggro and die and there is virtually nothing you can do about it as a 5.2 prot paladin.
Addendum! Experience has and will always outvalue gear. I have personally tanked 8HC+ runs with around 5.6, and people before me have tanked LoD with barely higher. If you are good at what you do, know the right people, and have a good reputation, you will get taken to high aim raids with piss poor gear. Number one rule of tanking is to have fun and be yourself.
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