That's just part of the issue. Â I don't think anyone (even new_rider) is contesting the superior braking ability of properly sized disc brakes. Â The problem is focusing solely on that one aspect of superiority while ignoring the laundry list of drawbacks. Â Full size sport bike racing slicks would certianly corner better than 700x25 bicycle tires and a frame made out of rubber and Jello would certainly ride smoother than one made of out carbon, but those single aspects of superiority aren't reason enough to start adopting those items. Likewise, the repeated tangets about tandem bikes and cross bikes are missing the point of the thread. Â This is about disc brakes on road bikes, racing and touring oriented road bikes in particular. I see this as a pointless push aimed at putting more money in manufacturer's pockets and not improving bike performance. Â Disc brakes make sense on muddy mountain bikes where their cons are outweighted by their pros, speeds are slower so heat is lower, and weight is less of an issue so rotors can be larger - likewise with CX bikes that race in messy conditions. Maybe they even make sense on big tandems if you use rotors off a truck. However, in order to make a road disc with the thermal capacity to not boil fluid on long, fast downhills, you're introducing a large set of compromises to fix stopping power and modulation problems that don't even exist with milled aluminum braking surfaces. Â This makes no sense to me. Â The only angle I can see this making sense from is to fix the poor braking of full carbon rims. Â However, as I previously mentioned, you're now shelling out a ton of money on aerodynamic rims that can't stop, so you have to shell out a half ton more money on disc brakes to help them stop... and those discs totally negate (and likely even drop you in the negative) the aero benefit of the wheels you spent so much money on. Â Now you're back to square one and the only thing you've accomplished is lightening your wallet... which is exactly what the component manufacturers want.