BMW R 1100 RT Repair Manual page 459

Technica Data
Headlight
Bulbs
High beam/low beam
Parking light
Rear light
Brake light
Flashing turn indicator
R 850 GS R 1100 GS
rectangular, with rectangular, with
halogen bulb halogen bulb
H 4, 55/60 W halogen, H 4, 55/60 W halogen,
asymmetric asymmetric
12 V/4 W 12 V/4 W
12 V/10 W 12 V/10 W
12 V/21 W 12 V/21 W
12 V/21 W 12 V/21 W
63.5