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Home >> BMW >> 2021 >> 840i 2D Convertible >> Repair and Diagnosis >> General Information >> OEM General Information >> General Orphan Data (3 Of 3) >> Install the front left and right wheels

Install the front left and right wheels

NOTE: Perform the steps on the left and right side.

Mounting the wheel 

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 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
G15700939Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Brake disc to rear wheel hub
M8 tightening torque  16 Nm
NOTE: TECHNICAL INFORMATION 
Do not  grease wheel hubs and the wheel centering in G80, G81, G82, G83 and G87 models.
G15700940Courtesy of BMW OF NORTH AMERICA, INC.
CONSUMABLE SPECIFICATIONS

Brake block paste 
* TU = Trade Unit. TU numbers cannot be ordered! For invoicing purposes only.
3 g, Bag 83192158851
100 g, Tube 83192158852
5 g, TU* 83230140233
NOTE: TECHNICAL INFORMATION 
Do not  grease wheel hubs and the wheel centering in G80, G81, G82, G83 and G87 models.
G15700941Courtesy of BMW OF NORTH AMERICA, INC.
CONSUMABLE SPECIFICATIONS

Brake block paste 
* TU = Trade Unit. TU numbers cannot be ordered! For invoicing purposes only.
3 g, Bag 83192158851
100 g, Tube 83192158852
5 g, TU* 83230140233
NOTE: TECHNICAL INFORMATION 
A wheel lifter is recommended for easier wheel removal and installation without exertion (see applicable BMW dealer equipment catalogue).

This process is intended to prevent damage to the brake disc.

G15700942Courtesy of BMW OF NORTH AMERICA, INC.

Check 

G15700943Courtesy of BMW OF NORTH AMERICA, INC.

Result 

» Spots (> 30%) of the bearing surface (1) of the taper on the screw head show silvery wear.

Measure

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.
G15700944Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Lug bolts
M14/SW17
Screw in lug bolts and evenly tighten crosswise by hand in order to center the wheel 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