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  1. 1st Gen. 1 Series (2004-2013 | E81, E82, E87, E88)
    Hi all, At the MOT test centre, after the roller brake test was complete, I was surprised to see on the summary page that were readings for a "Secondary Brake". If I recall correctly, there were readings under 4 columns titled, in order, "Service Brake", "Secondary Brake", "Imbalance" and...
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