Originally Posted by
Slaninar
Good caliper brakes and especially good V-brakes are good enough even in the rain - the limiting factor is tyre traction, not the brakes. You're talking about close riding in tight groups. It is more due to time it takes to react and squeeze brakes, than due to poor brakes.
If you need a couple wheel rotations to dry the rims before your brakes are fully working, then tire traction is not the main issue. The first guy goes down, but the next ten guys can't stop fast enough, and go down too.