tricks and tire width

I know people use a relatively thin wheel for flatland and use a wider wheel for street (to account for the trial elements involved), but why is the thin wheel preferable for flatland? I suppose a pirouette is easier with a thin tire, to reduce traction, but wouldn’t the additional stability from a wider tire be advantageous for some flatland tricks? I’ve always used a thin tire, but can’t help but wonder whether some walking the wheel variations would be easier with a wider tire. Thanks.

I’ve been thinking the same question for a while…

With a thinner tyre, you’ve more manouverability and speed (I think).

You don’t really need manouverability (sp.?) for trials, since you’re hopping all over the place but it’s good for freestyle, I suppose…

Sorry for being so incoherient. It sounded better in my head.