On Thu, 1 Jan 2009 10:28:17 -0500, "Eisboch"
wrote:

Best traction is with skinny tires, putting more weight per square inch of
footprint.
The big, fat tires, kept soft are good for running on a sandy beach.

The way to get more weight per sq inch of footprint is to raise the
tire pressure. At a given pressure, you get the same area of footprint
no matter what shape tire.

Casady