Originally Posted by
Bah Humbug
Ah, ok. 'Round Texas way the SK is the default. Likely a local conditions thing.
Our gravel crushes and packs pretty well; I think it's primarily limestone. There can be a loose top layer, particularly when it's fresh, but tread doesn't really help much with that. It also doesn't get muddy when wet, so aggressive tread only hinders on the fast sections and doesn't really help much otherwise. Wet dirt trails, like the river bottoms, or a CX course? Yeah, the more knobby the more better.