36 12 005 Replacing a run-flat technology or UHP tires

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NOTE: UHP tire = Ultra High Performance tire
UHP tires are tires with an aspect ratio (H:B) ≤ 45 % or tires with a speed index ≥"V"

NOTE: Follow the tire fitting machine manufacturer's operating instructions.
It is absolutely essential to ensure that the equipment is in proper working condition and that there is no damage to the disc wheel and tire.
Balance WHEELS after completing work.

IMPORTANT: For installation and removal work on run-flat tires and/or UHP tires on certified and approved tire fitting machines, the following successful training for the "Certified BMW tire fitter" is required.
Only approved and certified tire fitting machines may be used for installing run-flat tires and/or UHP tires!
Please refer to the operating instructions of the respective tire fitting machine for details of the exact fitting procedure.
Use only BMW-approved plastic-covered mounting levers!
Use only BMW-approved tire-fitting paste.

IMPORTANT: Pirelli tires can happen to have two little holes in the tread pattern!
These two holes are production-related!
The presence of these two little holes in the tread pattern does not represent a fault and does not affect the performance and the efficiency of the tires in any way!

Fig 1: Locating Little Holes In Tread Pattern

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Pay attention to different tire markings:

Position (1) Identification of BMW-approved tires. Ensure that only BMW-approved tires are fitted.
Item (2) RSC is the abbreviation for R un-flat S ystem C omponent (run-flat tires).
Item (3) Outside. The tire must be fitted so that the wording Outside is always situated on the outside of the rim.

IMPORTANT: Many tires are directional!
The arrow on the tire must point in the "Forward" direction of rotation!

Fig 2: Identifying Tire Markings

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Before removal:

Observe tire temperature of min. +15 °C. Refer to RECOMMENDATION FOR HEATING .
Clean wheel/tire unit
Remove valve insert (deflate tire)
Remove present balance weight

Dismantling of top tire bead:

Press off tire bead from rim flange as much as possible with unseating roller (1).

Note position of sensor - do not unseat in this area!

If using a pressing-off tool (2), unseat 3 to 4 times around circumference max. 1 cm from rim flange.

Observe pressing-off/unseating limitation.

Start at 90° or 270°.

Do not position at 0° or 180° Refer to Fig 3.

Fig 3: Pressing Off Tire Bead Using Unseating Roller

Courtesy of BMW OF NORTH AMERICA, INC.

Apply sufficient lubricant as deeply as possible between wheel rim and tire (BMW tire mounting paste, BMW part number 81 22 0 433 046).

Fig 4: Applying Sufficient Lubricant Between Wheel Rim And Tire

Courtesy of BMW OF NORTH AMERICA, INC.

Position mounting head (1) in direction of rotation before valve (2).

Position hold-down device at 0° to stop tire in wheel drop center.

Position mounting lever (3) on mounting head.

Fig 5: Positioning Mounting Lever On Mounting Head

Courtesy of BMW OF NORTH AMERICA, INC.

Lever tire bead (1) over rim flange with mounting lever.

IMPORTANT: Avoid damaging the wheel rim by using a suitable mounting lever with protective coating.
Make sure there is sufficient lubrication between tire bead and rim flange, apply lubricant if necessary (BMW tire mounting paste, BMW part number 81 22 0 433 046).

Allow tire fitting machine to rotate slowly, and relieve tension on hold-down device and rollers during rotation.

Fig 6: Levering Tire Bead Over Rim Flange Using Mounting Lever

Courtesy of BMW OF NORTH AMERICA, INC.

Dismantling of bottom tire bead:

IMPORTANT: Apply sufficient lubricant between wheel rim and tire (BMW tire mounting paste, BMW part number 81 22 0 433 046).

Position mounting head (1) in direction of rotation before the sensor (2).

Position mounting lever (3) on mounting head (1).

Tyre bead must be positioned entirely in wheel drop center opposite mounting head (1).

Fig 7: Positioning Mounting Lever On Mounting Head

Courtesy of BMW OF NORTH AMERICA, INC.

Lever tire bead (1) over rim flange with mounting lever.

IMPORTANT: Avoid damaging the wheel rim by using a suitable mounting lever with protective coating.

Allow tire fitting machine to rotate slowly.

Fig 8: Levering Tire Bead Over Rim Flange Using Mounting Lever

Courtesy of BMW OF NORTH AMERICA, INC.

Observe before mounting

Observe minimum tire air temperature of +15 °C. Refer to RECOMMENDATION FOR HEATING .
Clean wheel/tire
Check wheel rim for burrs, wear and other damage
Clean tire beads and check for evidence of damage
Check RDC sensor for damage
Renew tire valve

Before Mounting:

IMPORTANT: Apply lubricant to inside of top tire bead (1) and to outside of top and bottom tire sidewall (2) up to top decorative line (BMW tire mounting paste, BMW part number 81 22 0 433 046).

Fig 9: Identifying Upper Bead And Lower Sidewall

Courtesy of BMW OF NORTH AMERICA, INC.

Apply lubricant over entire well area (BMW tire mounting paste, BMW part number 81 22 0 433 046).

Lever sensor spare.

Fig 10: Applying Lubricant Over Entire Well Area

Courtesy of BMW OF NORTH AMERICA, INC.

Installation of bottom tire bead:

Grip wheel and lay on tire.

IMPORTANT: Apply a light coating of lubricant to mounting head (BMW tire mounting paste, BMW part number 81 22 0 433 046).

Fig 11: Fitting Lower Bead

Courtesy of BMW OF NORTH AMERICA, INC.

Position of the mounting head (1) as pictured.

IMPORTANT: Make sure tire is correctly positioned on mounting head. Position tire bead in relation to mounting head (1) in accordance with equipment manufacturer's specification.
Position sensor (RDC) (3) and valve min. 10-15 cm before traction point/catching point (2).
Sensor must not be subjected to load.

Fig 12: Positioning Sensor And Valve

Courtesy of BMW OF NORTH AMERICA, INC.

Allow tire fitting machine to rotate slowly.

Guide tire in direction of rotation and press towards wheel drop center.

Installation of top tire bead:

Position sensor (1) in relation to mounting head (2) as pictured.

IMPORTANT: Make sure tire is correctly positioned on mounting head. Position tire bead in relation to mounting head (2) in accordance with equipment manufacturer's specification.
Position sensor (RDC) (1) and valve min. 10-15 cm before traction point/catching point.
Sensor must not be subjected to load.

Coat bead holding-down element (3) with lubricant and insert (BMW tire mounting paste, BMW part number 81 22 0 433 046).

Fig 13: Positioning Sensor In Relation To Mounting Head

Courtesy of BMW OF NORTH AMERICA, INC.

Allow fitting machine to rotate slowly.

Insert additional bead holding-down elements (1) to hold the tire bead in wheel drop center.

The last part of the tire bead should jump over the rim flange in the sensor area.

IMPORTANT: Perform fitting in stages, take short breaks and relieve tension.
Avoid heavy deformations at the traction point.
Do not squash belt edge and side walls through hold-down devices.
Never use a mounting lever as a hold-down device.

Fig 14: Holding Bead In Wheel Drop Center

Courtesy of BMW OF NORTH AMERICA, INC.

Filling/inflating tire

Remove all fitting aids.

IMPORTANT: Possibilities for safely mounting the wheel or incorporation in inflation apparatus should be utilized.
Observe instructions/conditions of trade association.
Observe national regulations!

Inflate with air (without valve insert).

Increase pressure up to 3.3 bar in stages (fitting pressure).
If the tire bead does not slip fully past the rim edge all round, do not under any circumstance increase the pressure.
If necessary, release air and force off tire bead again.
Coat rim flange and tire again with tire mounting paste (BMW tire mounting paste, BMW part number 81 22 0 433 046).
Inflate tire again up to 3.3 bar.
When tire beads are resting perfectly on rim shoulders, increase tire pressure to maximum 4.0 bar (settling pressure) to "settle" the tire.

Screw in valve insert and correct the tire pressure.

Observe notes on initialization of the RUN FLAT INDICATOR (RPA) or RDC (USA=TPM).

IMPORTANT: Advise the customer to avoid heavy acceleration and heavy braking in the initial period.
The assembly paste can cause the tire to turn on the wheel rim and give rise to imbalance.