The dealers usually don't care because there is a cost built-in to the price of the new car, one time I let my sister drive my loaner and I didn't realize there was a flat (brand-new c230), she drove it 100 miles on the rim (destroying the rim and tire), I told them I'd be more than happy to pay for the damages and they said absolutely not, don't worry about. I was astounded but very thankful

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2006 BMW X5 4.8is Lemans Blue/Beige/Dark Maple
-Nav, Comfort Seats, Heated Steering Wheel,
Rear Airbags, AUX Input
2009 BMW M3 Space Grey/Black/Carbon
-all options