Replacing Tire For Front, Rear or Spare Wheel (Wheel With RDC)
Replacing Tire For Front, Rear or Spare Wheel (Wheel With RDC)
For correct mounting of tires, refer to operating instructions supplied with tire mounting machine. Also make sure that the machine is in perfect condition and that the wheel rim and tire are not damaged.
Note: For approved tires and tire sizes as well as special equipment, refer to Service Information bulletin.
Tire removal with a fitting machine:
Unscrew valve and deflate tire. Press off bead from rim flange all around on outside and inside using pressing-off horn of machine.
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.
If the tire beads are stuck, first loosen beads at various points of wheel before actually forcing tire off with pressing-off horn.
Apply tire mounting paste between tire and rim flange and force off tire completely.
Push both tire beads completely into rim well until they are loose.
Pull off balance weights on rim and clean rim to remove large pieces of dirt.
Coat tire beads with mounting paste.
Clamp wheel on mounting machine.
Narrow rim shoulder always faces upwards.
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 should be approx. 15 cm to the right of the assembly head so as to prevent the tire iron from damaging the RDC wheel electronics.
Raise tire bead with tire iron over mounting finger.
Note: To avoid damage, it is recommended to use coated or shrink-fit hose-covered tire irons for light alloy rims.
Let mounting machine run back a short distance (counterclockwise) so that tire bead can slide fully onto mounting finger.
Then let mounting machine run forward (clockwise) a short distance.
In so doing, always check whether bottom bead is fully in well and tire is given enough 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 tire iron.
In so doing, make sure that the tire bead does not press onto the RDC wheel electronics.
Let machine run back a short distance again and then forward (clockwise) briefly until there is complete separation of the tire from the rim.
Release lock and tilt back or swing away mounting pillar.
Unclamp and clean rim.
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 secure seating, do not tighten down screw and union nut. If one of the valve parts is loose, replace the entire valve.
Coat rim flange and tire beads with mounting paste (refer to BMW Parts Service).
Keep wheel electronics free of tire mounting paste.
Clamp rim on fitting machine, valve must be facing 1800 to assembly head.
Slide on tire 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 tire under mounting finger by hand.
Tire bead should seat in rollers next to mounting finger.
Let mounting machine run forward (clockwise) a short distance.
Fit lower tire bead such that it cannot exert any pressure on the RDC wheel electronics.
Lower tire bead will drop into well.
Turn wheel into fitting position again so that valve is 1800 opposite assembly head.
Press upper tire bead underneath mounting finger. Tire bead should seat in rollers next to mounting finger.
Caution!
Do not pinch or damage bead.
Run mounting machine forward (clockwise) a short distance, while checking that lower tire bead remains in well.
Fit upper tire bead such that it cannot exert any pressure on the RDC wheel electronics.
After mounting, first release clamps and then inflate tire (without valve).
Increase pressure up to 3.3 bar (330 kPa) in steps (jumping pressure).
If the tire bead does not slide onto rim edge all around, do not increase pressure. Instead, tire must be deflated and tire bead pressed off; then coat rim flange with mounting paste again (refer to BMW Parts Service) and inflate again up to 3.3 bar. If beads bear perfectly on rim shoulders, increase pressure to maximum 4.0 bar in order to "seat" tire.
Screw in valve and correct tire pressure.