Originally Posted by
American Euchre
Controlling for rider weight, hydraulics do not stop any sooner than rim brakes on alu rims, in dry conditions.
They stop a bit sooner in wet conditions.
A heavier rider will take longer to stop compared to a lighter rider.
However, a heavy rider will not stop any sooner by switching from rim brakes to hydraulics on dry roads.
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.