If the brake pedal is firm, I would say not. The O ring in the brake caliper is square, if that makes sense. When you apply the brakes, that "square" O ring rocks a little. When you let off of the brake, that "square" O ring un-rocks a little. That is what relieves the brake pressure from the rotor. Not much movement to say the least. Add in some dynamics and wheel bearing clearance, now we have a lot less drag.
