Mounting the wheel
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Clean the contact surfaces between the brake disc and the wheel rim
NOTE:
TECHNICAL INFORMATION
The contact surface between the brake disc and the wheel rim must be clean and free from oil and grease. There is otherwise a risk of the wheel becoming loose at a later time.
The contact surface between the brake disc and the wheel rim must be clean and free from oil and grease. There is otherwise a risk of the wheel becoming loose at a later time.
- Remove dirt, grease residues and corrosion from the contact surface with a drill and the special tool 2 344 011
.
Do not operate special tool 2 344 011 with an impact screwdriver.
- Degrease the contact surfaces with the universal cleaner (see applicable BMW Group Parts catalog).
- If there are grease deposits in the area of the wheel bolt holes, remove and clean the brake disc.
- Remove dirt, grease residues and corrosion from the contact surface with a drill and the special tool 2 344 011
.
Do not operate special tool 2 344 011 with an impact screwdriver.
- Degrease the contact surfaces with the universal cleaner (see applicable BMW Group Parts catalog).
- Check if the mounting bolt (1) for the brake disk has been fitted correctly.
The mounting bolt (1) for the brake disk cannot protrude on the contact surface (2) between the brake disk and the rim.
TIGHTENING TORQUE SPECIFICATIONS
| Brake disc to front wheel hub | ||
| M8 | tightening torque | 16 Nm |
TIGHTENING TORQUE SPECIFICATIONS
| Brake disc to rear wheel hub | ||
| M8 | tightening torque | 16 Nm |
- Lightly grease the wheel centering (1) in the rim.
See GREASE FOR WHEEL-CENTRING SPIGOTS for further information on grease for the wheel centering (1).
Check
- Check lug bolts for wear.
Result
» Spots (> 30%) of the bearing surface (1) of the taper on the screw head show silvery wear.
Measure
- Replace lug bolts.
NOTE:
TECHNICAL INFORMATION
Never use an impact screwdriver or electric screwdriver to apply and tighten the lug bolts.
The rim must rest evenly against the brake disc.
In the case of non-original BMW lug bolts/wheel rims, it may be necessary to retighten the lug bolts on user account of setting properties (refer to the documentation from the manufacturer).
Do not apply oil to new lug bolts.
Never use an impact screwdriver or electric screwdriver to apply and tighten the lug bolts.
The rim must rest evenly against the brake disc.
In the case of non-original BMW lug bolts/wheel rims, it may be necessary to retighten the lug bolts on user account of setting properties (refer to the documentation from the manufacturer).
Do not apply oil to new lug bolts.
- Replace the corroded lug bolts (arrows).
- Clean the lug bolts (arrows).
- Check the lug bolts (arrows) and threads for damage, replace lug bolts if necessary.
- Join and tighten the lug bolts (arrows).
TIGHTENING TORQUE SPECIFICATIONS
| Lug bolts | ||
| M 14/Key range 17 Screw in the lug bolts and tighten them crosswise and evenly by hand to center the rim. Tighten lug bolts to the prescribed tightening torque with a calibrated torque wrench in a crosswise sequence. Check all the lug bolts in the same order or retighten to the prescribed tightening torque again. |
tightening torque | 140 Nm |
| Check | 140 Nm | |
Follow-up work
- Refer to RESETTING THE TIRE PRESSURE MONITOR .