Originally Posted by
GeneO
They stop a lot faster than rim for me in dry weather. Modern disc aren't that heavy when you consider you don't need that thick braking rim (at least for alloy wheels). And the weight is concentrated at the axis of the wheel where it doesn't matter as opposed to the braking rim at the edge of the tire, where weight matters more.
But you don't have any evidence to back up that claim. The reality is, discs don't stop any faster in dry weather. The GNC video shows discs stop faster in the dry, but only with carbon rims.