36 12 001 Replacing a tire (removing and installing support ring): Installation

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Installation of the support ring is described separately from removal. Assembly sequence for removal and installation is different.

If necessary, install wheel electronics.

CAUTION: Carry out the following tasks on a cleaned workshop floor. In so doing, make sure no foreign bodies (large contaminants) get into the tire or support ring.

Lay special tool 36 1 410/416 (lashing strap) around support ring so that ABS ratchet on outer side (spacer nub side) touches outer edge.

In so doing, align support ring so that following components are not located underneath special tool 36 1 410/416 (lashing strap):

Support ring seam
Wheel electronics for RDC (tire pressure control)

Contract support ring with special tool 36 1 410/416 (lashing strap) by operating ABS ratchet several times. The oval created must have a dia. of approx. 40 cm at its narrowest point.

Fig 1: Laying Special Tool (Lashing Strap)

Courtesy of BMW OF NORTH AMERICA, INC.

Coat circumference of support ring and outer bead of tire in marked areas with tire fitting lubricant.

Fig 2: Coating Circumference Of Support Ring And Outer Bead Of Tire In Marked Areas With Tire Fitting Lubricant

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: Observe allocation of tire and support ring.
If the support ring is fitted on the wrong side, there will be no possibility of correcting the error. The tire will have to be destroyed.

Marking on outer side of tire:

(1) DOT
(1) Direction-of-rotation specification
Marking on outer side of support ring:
(2) Spacer nub on sidewall
(3) Fabric tape

Fig 3: Marking On Outer Side Of Support Ring
Courtesy of BMW OF NORTH AMERICA, INC.

Place contracted support ring (ABS ratchet points outwards) in outer tire bead.

Using special tool 36 1 410/423 (tire iron), prevent support ring from slipping out of tire on rear side.

Fig 4: Preventing Support Ring From Slipping Out Of Tire On Rear Side

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Place tire flat on a clean surface.

CAUTION: When working with special tool 36 1 410/423 (tire iron), do not damage fabric tape (1) around support ring.

Beginning in area of lashing strap: Lever outer tire bead with special tool 36 1 410/423 (tire iron) over support ring.

After raising on left and right, relieve tension on lashing strap with ABS ratchet by 2 notches.

Fig 5: Beginning In Area Of Lashing Strap

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Repeat procedure several times until support ring is completely enclosed by tire.

Relieve tension on lashing strap completely and pull out of tire.

Fig 6: Relieving Tension On Lashing Strap Completely And Pull Out Of Tire

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If necessary, remove valve from rim.

Install new valve in rim with a commercially available valve fitting tool.

Fig 7: Installing New Valve In Rim With A Commercially Available Valve Fitting Tool

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Align special tool 36 1 060 to rim that valve (1) is located under aperture (2).

Press special tool 36 1 060 with three journals onto rim.

Fig 8: Pressing Special Tool With Three Journals Onto Rim

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NOTE: Valve (1) is visible through aperture in special tool 36 1 060.

Fig 9: Identifying Valve Is Visible Through Aperture In Special Tool

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CAUTION: If necessary, replace faulty plastic caps (1) on clamping jaws.

Fig 10: Replacing Faulty Plastic Caps On Clamping Jaws

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Clamp rim with special tool 36 1 060 facing upwards on tire fitting machine.

Coat following areas carefully with tire fitting lubricant:

Rim well
Support ring beads
Tire beads

Fig 11: Clamping Rim With Special Tool Facing Upwards On Tire Fitting Machine
Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: Before fitting, make sure tire and support ring are positioned on correct side:
Outer bead with DOT and direction-of-rotation specification point upwards.

CAUTION: Do not damage rim.
Only roll on inner beads of support ring and tire.

Place tire with support ring at an angle against rim.

Roll inner beads of tire and support ring in succession with fitting head over rim flange.

Fig 12: Placing Tire With Support Ring At An Angle Against Rim

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: Do not damage rim.
After completely rolling on outer beads of support ring and tire, it is not possible to make any further corrections on the rim.

Turn support ring with tire until valve is located between two spacer nubs.

Distance (A) approx. 5 cm.

Fig 13: Turning Support Ring With Tire Until Valve Is Located Between Two Spacer Nubs

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Roll outer beads of support ring and tire in succession with fitting head over outer rim flange.

Detach special tool 36 1 060 from rim.

NOTE: When rolling on, ensure the rolled-on outer bead of the support ring slips immediately into the drop center.

Fig 14: Detaching Special Tool From Rim

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CAUTION: Support fin of special tool 36 1 410/423 (tire iron) at steep deep center sidewall only.

If necessary, lever outer bead of support ring with special tool 36 1 410/423 at fitting head into drop center.

Fig 15: Supporting Fin Of Special Tool (Tire Iron) At Steep Deep Center Sidewall Only

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NOTE: The support ring for the E39 Protection vehicle has a very high adhesion resistance on the rim. Alignment must therefore be carried out with a pneumatic/hydraulic plastic press-off roller.
Carry out this "leveling of the support ring" on both sides of the wheel. In so doing, press the press-off roller with a small advance onto the tire bead grooves.

Aligning outer bead of support ring plane-parallel to outer rim flange: Turn machine plate with press-off roller (1) several times.

CAUTION: Do not set wheel (uninflated) firmly on floor.

Remove wheel from tire fitting machine.

Fig 16: Turning Machine Plate With Press-Off Roller Several Times

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Rotate wheel and clamp at outer rim flange (styling side) on tire fitting machine.

Aligning inner bead of support ring plane-parallel to inner rim flange: Turn machine plate with press-off roller (1) several times.

Remove wheel from tire fitting machine.

Inflate complete tire as usual.

Balance tire.

Fig 17: Rotating Wheel And Clamp At Outer Rim Flange (Styling Side) On Tire Fitting Machine

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: If after leveling you are in doubt as to the correct position of the support ring, you can turn the wheel again and repeat the leveling process.