I think the idea behind the bb is for easy/fast refitting of the wheel. Nice when you puncture and nice if you sling it in a car with the wheels off too I guess. Also avoids issues of disc/caliper allignment.
@miro_o started
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I think the idea behind the bb is for easy/fast refitting of the wheel. Nice when you puncture and nice if you sling it in a car with the wheels off too I guess. Also avoids issues of disc/caliper allignment.