36 12 001 Changing A Tyre (On Front, Rear Or Spare Wheel)
Refer to the operating manual of the relevant fitting equipment manufacturer for details on how to fit the tyre correctly. The equipment must be in perfect condition to exclude the risk of damaging the disc wheel and the tyre.
Comply with approved tyres, tyre sizes and optional extra.
Follow instructions on initialising RUN FLAT INDICATOR (RPA).
- 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.
Pay attention to different tyre markings:
Many tyres are directional!
The arrow on the tyre must point in the direction of travel for each wheel!
Models with M Mobility system
If the wheel was inflated with the M Mobility system after a puncture, observe the following: Before removal, drill a hole of approx. 25 mm dia. in the tyre sidewall. Drain sealing compound from this hole and dispose of this compound in an environmentally responsible manner. Clean the disc wheel after removing the tyre.
Tyre removal with a fitting machine:
Unscrew valve insert, discharge air, force off tyre bead from rim flange with pressing-off horn of device on outside and inside.
If tyre beads are stuck, first release the tyre with the pressing - off horn at several points of the wheel before actually pressing off, apply tyre mounting paste between tyre and rim flange and press off the tyres completely.
Pull off balance weights on rim and clean rim to remove large pieces of dirt.
Clamp wheel on mounting machine.
Narrow rim shoulder always faces upwards.
Vehicles with RDC:
To prevent the pressing-off horn from damaging the RDC wheel electronics, do not rest the pressing-off horn on both rim sides in the area of the valve.
Swing or fold mounting pillar into position and let it engage.
Adjust mounting head, pressing it on the rim edge fully, and turn down the lever for the clamp; normally the distance of the mounting head will set in automatically.
The valve must be approx. 15 cm to the right of the assembly head so as to prevent the tyre iron from damaging the RDC wheel electronics.
Raise tyre bead with tyre iron over mounting finger.
On aluminum rims, it is best to use a tyre iron coated (either fully or partially) with shrink-on plastic tubing to prevent damage.
Let fitting machine run back a short distance (counterclockwise) so that tyre bead can slide fully onto mounting finger.
Then let fitting machine run forward in stages (clockwise).
In so doing, always check whether the lower bead is fully resting in the well and allow the tyre time to move.
If the bead clamps, stop the machine and let it run back slightly.
If the upper bead is pulled off the rim, also lift the bottom bead over the mounting finger with the tyre iron.
Let machine run back a short distance again and then forward (clockwise) briefly until there is complete separation of the tyre from the rim.
Vehicles with RDC:
Tyre bead must not press onto RDC wheel electronics.
Release lock and tilt back or swing away mounting pillar.
Unclamp and clean rim.
Replace valve.
Coat rim flange and tyre beads with mounting paste.
Vehicles with RDC:
When the wheel electronics are installed, the rim must not be cleaned with high-pressure cleaning equipment.
Visually inspect wheel electronics for external damage and check for tight fit; do not retighten screw and union nut. If a valve is loose, the complete valve must be replaced.
Keep wheel electronics free of tyre mounting paste.
Clamp rim on fitting machine, valve must be located at 180 ° to mounting head.
Slide on tyre with lower bead partially over rim flange.
Swing or tilt mounting pillar into position and lock.
Check adjustment of mounting finger, readjusting if necessary, and clamp.
Press tyre under mounting finger by hand.
Tyre bead must seat in rollers next to mounting finger.
Let fitting machine run forward (clockwise) a short distance.
Lower tyre bead will drop into well.
Vehicles with RDC:
Fit lower tyre bead so that no pressure forces are exerted on RDC wheel electronics.
Turn wheel again into fitting position so that valve is at 180 ° to mounting head.
Press upper tyre bead under mounting finger. Bead must seat in rollers next to mounting finger.
Do not pinch or damage bead.
Operate fitting machine forwards (clockwise) little by little; while doing so, make sure the lower tyre bead remains in the well.
Vehicles with RDC:
Fit upper tyre bead so that no pressure forces are exerted on RDC wheel electronics.
After mounting, first release clamps and then inflate tyre (without valve).
Increase pressure up to 3.3 bar (330 kPa) in steps (jumping pressure).
If the tyre bead does not slip on all round at the rim edge, do not increase pressure further but rather drain off air.
Press off tyre bead again, coat rim flange again with tyre mounting paste, and pump up again to 3.3 bar. When the beads are resting properly on the rim shoulders, increase inflation pressure to max. 4.0 bar to "settle" the tyre.
Screw in valve insert and correct tyre pressure.