Nice pic of wet weather racing.

[green_zx7r]

Love this pic.

[arata954]

that looks a little like a oh fuck to me

[pilot]

More like, "Do It In The Dirt!"

[MetaLord 9]

I say skip high school physics. Grab a bike, ride it around a bit and you'll know damn near everything practical about the laws of physics, including those referring to friction/traction...