[nexgendedhed]

I am not a physics expert either, but do have one thing that might be useful.
People are using the terms traction and friction almost interchangeably, which may lead to misconceptions. Friction (F=uN) is a fairly simplistic empirical model that does not depend on surface area. Traction, on the other hand, actually does depend on surface area. Using a larger surface area while leaving other factors constants results in increased traction. For evidence, think of rubbing two small pieces of sandpaper together versus two larger pieces, or wide drag racing tires.

I can't find a whole lot of information on traction, however, so if anyone knows more and would like to correct me, I would appreciate it.