36 12 005 Replacing a runflat tire or a UHP tire: Notes
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.
UHP tire = Ultra High Performance tire
UHP tires are tires with an aspect ratio (H:B) ≤ 45% or tires with a speed index ≥"V".
Applicable training is required for installation and removal work on run-flat tires and/or UHP tires on certified and approved tire fitting machines.
For the installation run-flat tires and/or UHP tires, only tire fitting machines approved and certified by WDK (Wirtschaftsverband der deutschen Kautschukindustrie) (German rubber industry) may be used.
Refer to the manufacturer's operating instructions provided with the tire fitting machine for details on the exact fitting procedure.
Use only BMW-approved plastic-covered mounting levers!
Use only BMW-approved tire-fitting paste (Wurth Tire Mounting Paste, part no. 892800).
If tire sealant is used, the installed wheel electronics must be replaced.
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!
- Position (1) identification of BMW-approved tires. Ensure that only BMW-approved tires are fitted.
- Position (2) RSC is the abbreviation for R un-flat S ystem C omponent (runflat tires).
- Position (3) Outside means outer side. The tire must be fitted so that the wording Outside is always situated on the outside of the rim.
Attention!
Many tires are directional!
The arrow on the tire must point in the "Forward" direction of rotation!
Attention!
Before removal:
- Maintain tire air temperature of approx. +23°C. Refer to RECOMMENDATION FOR HEATING .
- Clean wheel/tire unit
- Remove valve insert (deflate tire)
- Remove present balance weight
Observe before mounting:
- Maintain tire air temperature of approx. +23°C. Refer to RECOMMENDATION FOR HEATING
- Clean wheel/tire
- Check wheel rim for burrs, wear and other damage
- Clean the tire beads and check for evidence of damage.
- Check the wheel electronics for damage.
- The aluminium screw valve must be replaced at the disassembly of the wheel electronics.
Filling/inflating tire:
Remove all fitting aids.
Attention!
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 the rim edge and the tire with tire paste once again.
- 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 the notes on INITIALIZATION of the tire pressure control (RDC).
Attention!
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.