Where are you going? If you're going to Oregon Inlet and are on small tires you might want to air down. Even then, I've never aired down and my trucks tires are not very big for something that heavy. The biggest thing is that if you slow down and start spinning... don't just lay into it and spin further. If you're spinning, you're filling in your tracks behind you... making backing out of the situation a non-option. Honestly though, it's no big deal. Put it in 4, and go at it. Just don't drive like a typical squid.

If you're going to Corolla and you get stuck, I have no sympathy.