Originally Posted by Cornish_Rdr_UK
thats another thing I dont udnerstand, so what if its overkill, if its a better brake, why does it matter?
How is it better? Thats why they don't use them on road bikes. The v-brake will lock up a rear wheel with ease. When you lock up a wheel you lose traction and stopping power. All a disc wheel does is lock up easier. The ability of the tire to keep traction can't match the power of the disc. With the added weight it is overkill. If you are riding in muddy conditions than the disc is better.