"Ryan Cousineau" wrote in message
news:rcousine-

Even on packed gravel, I would opt for the slicks over
knobbies. About
the only urban surface a knobby can traverse that a slick
cannot is a
muddy slope long enough that you can't just power through
by
accelerating before you hit the hill. That's a pretty rare
thing, even
when making shortcuts.

Well, there's snow. Not virgin snow that you can slice
right through, but somewhat chewed up snow.