Here's the official disclaimer:

"* The BMW Maintenance Program covers all factory-recommended maintenance on all model year 2006 vehicles and newer vehicles, as determined by the Service Level Indicator, for four years or 50,000 miles, whichever comes first. Exclusions from coverage: gasoline, gasoline additives, windshield washer additives, tires, wheels, wheel alignment, tire balancing and rotation. All work must be performed by an authorized BMW center. See the Service and Warranty Information booklet for more details and exclusions. "

The recommended interval is 15K, but so long as you're under the Maintanence Program, you're at the mercy of the lights.

25.5K is entirely too long IMHO. Did you get an oil change after break-in at 1200 miles?