Should the outside tires chirp when turning really tightly at low speeds?

I feel like I'm asking a stupid question -- I mean, I know what a differential is for. But it just seems like the VX has been chirpier in the last week or two. Today while easing into a parking place, I left a perfect arc of rubber in front of the parking place.

Is there some failure mode where an LSD becomes a REALLY L SD? Or is this normal for the VX, and I've just not noticed it before?