BMW R 1100 RT Repair Manual page 301

Technical Data
Brake fluid
Minimum lining thickness
Front wheel
Brake disc dia.
Brake disc thickness
Minimum thickness
Brake pad surface area
Piston dia. in brake caliper
Piston diameter in handlebar lever cylinder
Sensor gap, front
Brake pad
Rear wheel
Brake disc dia.
Brake disc thickness
Minimum thickness
Permissible lateral runout
Brake pad surface area
Piston dia. in brake caliper
Piston dia. in foot brake cylinder
Sensor gap, rear
Brake pad
34.6
R 850 R
DOT 4
mm (in) Wear indicator
mm (in) 305 (12.0079)
± 0.1 ± 0.003937
mm (in) 5 (0.1969
mm (in) 4.5 (0.1772)
2
cm 100 (15,5)
(sq.in)
mm (in) 32/34 (1.2598/1.3386)
mm (in) 20 (0.787)
mm (in) 0.45...0.55
(0.0177...0.02165)
Semi-metallic
mm (in) 276 (10.866)
mm (in) 5.0 (0.1969)
mm (in) 4.6 (0.1811)
mm (in) 0.15 (0.0059)
Spoked wheel
mm (in) 0.15 (0.0059)
Cast wheel
2
cm 34 (5.27)
(sq.in)
mm (in) 26/28 (1.0236/1.10236)
with insulating piston
mm (in) 12 (0.4724)
mm (in) 0.45...0.55
(0.0177...0.02165)
Semi-metallic
R 1100 R
DOT 4
Wear indicator
305 (12.0079)
± 0.1 ± 0.003937
) 5 (0.1969 )
4.5 (0.1772)
100 (15,5)
32/34 (1.2598/1.3386)
20 (0.787)
0.45...0.55
(0.0177...0.02165)
Semi-metallic
276 (10.866)
5.0 (0.1969)
4.5 (0.177)
0.15 (0.0059)
Spoked wheel
0.15 (0.0059)
Cast wheel
34 (5.27)
26/28 (1.0236/1.10236)
with insulating piston
12 (0.4724)
0.45...0.55
(0.0177...0.02165)
Semi-metallic