BMW R 18 B 2021 Rider's Manual page 206

Important data for refueling:
Fuel
Recommended fuel quality
Alternative fuel quality
Usable fuel quantity
Fuel reserve
Tire inflation pressures
Front tire pressure
Rear tire pressure
You can find further information on all aspects of your vehicle at:
bmw­motorrad.com
BMW recommends
Order No.: 01 40 9 831 027
01-2021, 1st edition, 07
Premium unleaded (91) (max. 15% ethanol,
E15)
89 AKI (95 ROZ/RON)
90 AKI
Regular unleaded (max. 15% ethanol, E15)
87 AKI (91 ROZ/RON)
87 AKI
Approx. 6.3 gal (Approx. 24 l)
Approx. 1.1 gal (Approx. 4 l)
42.1 psi (2.9 bar), with cold tires, one-up and
two-up riding
46.4 psi (3.2 bar), with cold tires, one-up and
two-up mode
*01409831027*
*01409831027*