Originally Posted by
onespeedbiker
With some disc brakes the caliper only has one moving pad, while the other is stationary. With these you need to adjust the caliper so the disc runs as close as possible to the stationary pad, otherwise it can push the wheel out of true every time you brake.
If the hub bearings are properly adjusted, it won't move. Yes the disc flexes but the hub doesn't move, so therefore the wheel doesn't move either.