36 12 005 Replacing a runflat tyre

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2008 BMW 335xi, 2008 BMW 335i, 2008 BMW 328xi, 2008 BMW 328i, and 2008 BMW 323i. However, it is still accessible from the selected car via links, so may be relevant.

Follow the 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 tyre.

After completion of work, Balance Wheels .

IMPORTANT: Only fitting machines which are approved for fitting runflat tyres may be used!

Please refer to the operating instructions of the respective fitting machine for details of the exact fitting procedure.

Use only BMW-approved plastic-covered tyre irons.

Use only BMW-approved tyre mounting paste.

NOTE: Pay attention to different tyre markings:

Item (1) Marking denoting BMW-approved tyres. Ensure that only BMW-approved tyres are fitted.
Item (2) RSC is the abbreviation for R unflat S ystem C omponent (runflat tyres).
Item (3) Outside. The tyre must be fitted so that the wording Outside is always situated on the outside of the rim.

Fig 1: Identifying Tyre Marking
Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Many tyres are directional!
The arrow on the tyre must point in the direction of travel for each wheel!

After completing fitting, first release clamping claws.

Inflate with air (without valve insert).

Increase pressure up to 3.3 bar in stages (jumping pressure).

If the tyre bead does not slip fully past the rim edge all round, do not under any circumstance increase the pressure.

Release air and force off tyre bead again.

Coat rim flange with tyre mounting paste again.

Inflate tyre again up to 3.3 bar.

When tyre beads are resting perfectly on rim shoulders, increase inflation pressure to max. 4.0 bar to "settle" tyre.

Screw in valve insert and correct tyre pressure.

Follow instructions on initializing Run Flat Indicator (RPA).

Fig 2: Pressing Off Tyre Bead With Fitting Machine

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Advise the customer to avoid heavy acceleration in the initial period.

The mounting paste can cause the tyre to turn on the rim and give rise to imbalance.