dogmatic I can tell you this: I've got those super shiny polished finish dp18's without a machined braking surface and while they brake somewhat, I am starting to wonder wether they are the reason why I wasn't able to come to a full stop in time last week and ended up crashing into the back of a Renault Espace.
thats one of the reasons...the other one is the way you ride not how many braking surfaces and brakes and airbags you have on the bike:-p
thats one of the reasons...the other one is the way you ride not how many braking surfaces and brakes and airbags you have on the bike:-p