Oh yeah- and something else I was thinking about-
I think fatter tires help going through rocks too.
I know I'm riding 2.25 Tyrranoraptors - which I believe are actually mud tires, and they just charge over the rocks. They have a really wide and flatter tread pattern.I'm almost thinking of putting a 2.35 tire on the front, I think freeriders or downhillers do that.
A friend of mine is riding a 2.7 inch tire on the front- it's massive but he swears he can go over anything....it has a flatter, round dot type of tread pattern- but it goes over anthing, leaving the back tire which is knobbier to dig in.
Seems to work for him, though...

I haven't actually seen this addressed anywhere- but what do you folks think about different tires makes and models??

Width and treads?

Kimba