in addition to that, the difference probably lies in the mounting and adjusting of the camera. the HD series is good at this, the earlier ones are a pain in the ass and you cannot adjust without dismounting and screwdrivers.
2009 135i | space grey | sport | navi | hifi | heated
dinan stage 2 software | bmw performance exhaust
kw v2 | hotchkis front sway | vmr v710