Ability score clarification

[BasketOfPuppies]

My character has a 30 DEX and I was wondering just how flexible he is and what he's capable of. Can anyone provide clarification?

[Know(Nothing)]

Well it's not like Strength where you have carry weight to tell you what you're capable of.

That being said,
http://media.moronail.net/images/stories/dg_pictures/0809/376.jpg
https://i.chzbgr.com/maxW500/3932618496/h504668B8/

[Urpriest]

This gives you a +10 to Dex checks.

Here are some things you can do without any training:

Balance on a 7 inch wide beam every time without trying.

Move at full speed along a 2 inch wide surface if you're not under pressure.

Wriggle out of manacles, given enough time.

Move more quietly than a cat on average.

Ride bareback with no prior experience with horses.

Do basically anything with ropes without anyone having to teach you how.

With training, the sky's the limit, you're about 10 levels ahead of someone without any special talent in the field.

Edit: Got the number wrong, redid things.

[The Viscount]

For practical reference Ur-Priest has it down as always. Tumble should be fairly easy with a bit of investment (only a rank or two with synergy). As for personal reference, I'd probably place your character roughly on the level of Ragdoll.
http://static.comicvine.com/uploads/scale_medium/3/35127/747539-ragdoll5.png

[tzar1990]

The absolute, total, most dextrous person in the real world probably has a Dexterity of around 20 or so.

Dexterity of 30 is as far beyond them as they are beyond you.