The following videos show you the difference between running street pressure in your tires and airing down to nearly nothing demonstrated by one of the locals in my area. PirateJeep on Youtube.

Remember, the lower you go, the more chance you have a rolling a bead unless an aftermarket system is in place.

Cant embed the videos on here, so I have to link them, some folks in the snowier climate may find these interesting enough.

[ame="http://vimeo.com/19689076"]http://vimeo.com/19689076[/ame]

[ame="http://vimeo.com/19702924"]http://vimeo.com/19702924[/ame]

[ame="http://vimeo.com/19791674"]http://vimeo.com/19791674[/ame]