Apart from BMW’s silly prices, DO NOT USE OEM organic rear pads if your bike has ABS. The linked brake system will have them down to the metal backing in under 4000 miles.
OEM organic rears are fine on non ABS bikes. But BMW prices are ridiculous. Avoid.
I have Ferodo sintered in front and their Platinum organic on the rear. IMO sintered will over-brake the rear even with sintered in front.