I don't have a copy of any bumper to bumper warranty document, and I am not aware of one. It may be a phrase used by sales reps, in fact in sounds like something a sales rep would say. I have several warranties on my various BMWs, including the warranty in defects on parts (4 years), the adjustment period (1 year), the emission systems warranty (longer), the rust warranty (longer), the tire warranty (by the tire manufacturer) and the battery warranty (by the battery manufacturer). There may be others, but those are the ones that come to mind. I don't think it has changed recently, and mine is a Canadian experience, but on my last several vehicles the delivery process has included walking through each of those documents and understanding which one applies in which situation.

Some of the confusion may be because US vehicles have a full maintenance plan (not a warranty, but often confused with one) and that presumably covers adjustments. Canadian vehicles have only scheduled maintenance (oil, filters, etc) and so things like adjustments which aren't defects, but rather upkeep, are not covered for the duration of the maintenance plan.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue