There’s arguably no more polarizing subject in road cycling technology right now than the use of disc brakes. Some riders absolutely love them. Others loathe the idea as unnecessary and even dangerous. Given the fact that rim brakes have been around for decades — and worked just fine for everyone from Tour de France pros to cross-town commuters — clearly disk brakes are not essential. But which really works better? The gang from the Global Cycling Network did a little stop-distance testing to see if disc brakes can really slow you down faster (and safer) than rim brakes. Watch the video below to see the results.