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BMW Motorcycle (R1100RT, R1100RS, R850/1100GS, R850/1100R). Manual - part 42

36.5

Technical Data

R 850 GS

R 1100 GS

Rim size

front

2,50 x 19 MT H 2

rear

4,00 x 17 MT H 2

Max. vertical/lateral runout

Spoked wheel

front

mm (in) 1.3 (0.0512)

1.3 (0.0512)

rear

mm (in) 1.3 (0.0512)

1.3 (0.0512)

Tyre size

Spoked wheel

front

110/80 R 19 59 H
Tubeless

rear

150/70 R 17 69 H
Tubeless

Tyre pressure (cold)

Solo

front

bar (psi) 2.2 (31.91)

2.2 (31.91)

rear

bar (psi) 2.5 (36.26)

2.5 (36.26)

With pillion passenger

front

bar (psi) 2.5 (36.26)

2.5 (36.26)

rear

bar (psi) 2.7 (39.16)

2.7 (39.16)

With pillion passenger and luggage

front

bar (psi) 2.5 (36.25)

2.5 (36.25)

rear

bar (psi) 2.9 (42.06)

2.9 (42.06)

36.6

Technical Data

R 850 R

R 1100 R

Rim size

Cast wheel

front

3,50 x 17 MT H 2

rear

4,50 x 18 MT H 2

Spoked wheel

front

2,50 x 18 MT H 2

rear

4,00 x 17 MT H 2

Max. vertical/lateral runout

Cast wheel

front

mm (in) 0.5 (0.0197)

0.5 (0.0197)

rear

mm (in) 0.3 (0.0118)

0.3 (0.0118)

Spoked wheel

front

mm (in) 1.3 (0.0512)

1.3 (0.0512)

rear

mm (in) 1.3 (0.0512)

1.3 (0.0512)

Tyre size

Cast wheel

front

120/70 ZR 17 Tubeless 120/70 ZR 17 Tubeless

rear

160/60 ZR 18 Tubeless 160/60 ZR 18 Tubeless

Spoked wheel

front

110/80 ZR 18 Tubeless 110/80 ZR 18 Tubeless

rear

150/70 ZR 17 Tubeless 150/70 ZR 17 Tubeless

Tyre pressure (cold)

Solo

front

bar (psi) 2.2 (31.91)

2.2 (31.91)

rear

bar (psi) 2.5 (36.26)

2.5 (36.26)

With pillion passenger

front

bar (psi) 2.5 (36.26)

2.5 (36.26)

rear

bar (psi) 2.7 (39.16)

2.7 (39.16)

With pillion passenger and luggage

front

bar (psi) 2.5 (36.25)

2.5 (36.25)

rear

bar (psi) 2.9 (42.06)

2.9 (42.06)

36.7

Removing and installing front wheel

Removing front wheel

•

[RS/RT] Remove front mudguard.

•

Remove brake calipers.

Caution:

[RS/R/RT] Do not scratch rim; mask off with tape if
necessary. Do not tilt the brake caliper: risk of dam-
age to brake pads.

Note:

Do not apply handbrake lever with brake calipers re-
moved/front wheel removed.

•

Remove retaining screw (1).

•

Loosen clamping screws (2).

•

Remove quick-release axle.

•

Remove spacer bushing (3)
and speedometer drive.

•

Remove front wheel.

Installing front wheel

•

Install front wheel.

•

Install spacer bushing and speedometer drive.

Caution:

Anti-twist device (arrow) on speedometer drive is lo-
cated in front of stop on slider tube.

•

Apply a light coating of Molykote paste to the
quick-release axle/install it.

•

Tighten retaining screw (1).

•

Press forks down firmly several times.

•

Tighten clamping screws (2).

•

Install brake calipers.

•

[RS/RT] Install front mudguard.

•

[ABS] Check sensor gap and adjust if necessary.

ABS sensor gap ............................. 0.45...0.55 mm

.............................................. (0.0177...0.02165 in)

Tightening torque:

Screw connection, quick-release axle .......... 30 Nm
Clamping screws, quick-release axle ........... 22 Nm
Brake caliper to slider tube .......................... 40 Nm

RS360011

36.8

Removing and installing wheel bear-
ings

•

Remove shaft seal, driver and retaining ring.

•

Clamp arbor, BMW No. 36 5 511, in vise and
place wheel on it with the broad bearing in con-
tact with the arbor.

•

Place spacing ring, BMW No. 31 4 800, between
wheel hub/right side of wheel and claws of inter-
nal puller.

•

Heat bearing seat to 80 °C.

•

Pull out wheel bearing with counter-support
22/1, BMW No. 00 8 572, and internal puller
21/3, BMW No. 00 8 574.

•

Press out spacing bushing (1) and wheel bearing
(2) with drift, BMW No. 36 5 530.

•

Press reducing bushing out of bearing with drift,
BMW No. 36 5 530/ into new bearing.

•

Degrease bearing seats.

RS360021

00 8 572

00 8 574

31 4 800

RS360024

36 5 530

RS360023

36.9

•

Heat bearing seat.

•

First insert wide bearing using drift,
BMW No. 36 5 511, and handle,
BMW No. 00 5 500.

•

Clamp arbor, BMW No. 36 5 511, in vise and
place wheel on it with wide bearing (2) in contact
with arbor.

•

Install spacer tube (1).

•

Bearing seat temperature 80 °C.

•

Insert narrow bearing (3) with drift,
BMW No. 36 5 512, and handle,
BMW No. 00 5 500.

•

Install retaining ring and driver.

•

Drive in shaft sealing ring with drift,
BMW No. 36 5 500, and handle,
BMW No. 00 5 500.

RS360025

00 5 500

36 5 511

RS360026

00 5 500

36 5 511

00 5 512

RS360028

00 5 500

36 5 500

RS360027

36.10

[RS/R/RT] Removing and installing
rear wheel (cast alloy)

Removing rear wheel

•

[RS] Remove number plate carrier.

•

[RS/ABS] Detach muffler (silencer) mount/press
muffler outwards/carefully remove the rear
wheel.

Installing rear wheel

Caution:

The spacing washer (1) and the contact faces on the
rear wheel drive and the hub must be clean and free
from grease.

•

[RS/ABS] Press the muffler outwards.

•

Fit rear wheel to rear wheel drive with spacer disc
(1) and insert wheel studs hand-tight.

Caution:

Only use wheel studs with length code 60.
Do not oil or grease wheel studs!

•

Tighten wheel studs.

•

Install hub cap (2).

Note:

Insert lug on cover in recess in wheel.

•

Install number plate holder.

•

[RS/ABS] Bolt on the muffler mount.

Tightening torque:

Screw in wheel studs handtight, then
tighten them in a crosswise pattern
Initial tightening ............................................ 50 Nm
Final tightening........................................... 105 Nm

RS/R/RT

RS360040

36.11

[GS/R] Removing and installing rear
wheel (spoked)

Removing rear wheel

•

Unfasten/remove brake caliper.

•

Remove rear wheel.

Note:

[GS] To remove the wheel, carefully bend the rear
wheel cover to the right/do not remove it.

Installing rear wheel

Caution:

Contact faces on rear wheel drive and hub must be
clean and free of grease.

•

Fit rear wheel to rear wheel drive and screw in
wheel studs hand-tight.

Caution:

Only use wheel studs with length code 60.
Do not oil or grease wheel studs!

•

Tighten wheel studs.

Tightening torque:

Screw in the wheel studs handtight and
tighten them in a crosswise pattern
Initial tightening ............................................ 50 Nm
Final tightening ........................................... 105 Nm

•

Install brake caliper.

•

[ABS] Check sensor gap.

[ABS] Sensor gap ..........................0.45...0.55 mm

.............................................. (0.0177...0.02165 in)

36.12

Static balancing of front wheel/rear
wheel

•

Install balancing shaft (1), BMW No. 36 3 606,
with measuring bushing (2) and nut (3),
BMW No. 36 3 616, in the front wheel bearings.

•

Lightly preload bearing with knurled nut (3).

•

At the rear wheel, attach mounting fixture (4),
BMW No. 36 3 613, on the centering collar side
with the wheel studs and spacing washer, then
install the balancing shaft.

•

Align the balancing fixture, BMW No. 36 3 600,
with knurled screws/bubble gauge (5/6).

•

Allow wheel to settle.

•

Clean point of adhesion.

•

Attach adhesive weights (7) opposite heaviest
point of wheel (arrow), evenly distributed on both
sides (left/right) of rim.

Caution:

Maximum balancing weight 60 g (2.1 oz.).

•

Repeat balancing procedure as a check.

36 3 616

36 3 613

36 3 606

36 3 616

36 3 600

RS360050

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