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EnglishWheels and tires -> Lug bolt lock for your BMW i4 2021-2025
Wheels and tires
MOBILITY
Securing the vehicle against rolling
away
Lug bolt lock
Principle
General information
The vehicle manufacturer recommends to ad-
ditionally secure the vehicle against rolling
away when changing a wheel.
The wheel lug bolts have a special coding. The
lug bolts can only be released with the adapter
which matches the coding.
Overview
On a level surface
Depending on vehicle equipment, store the lug
bolt lock adapter as follows:
▷
In the cargo area under the cargo area
floor.
▷
▷
In the cargo area on the left or right side.
In the cargo area behind a side trim panel.
Place chocks or other suitable objects in front
and behind the wheel that is diagonal to the
wheel being changed.
On a slight downhill gradient
▷
▷
Lug lock bolt, arrow 1.
Adapter, arrow 2.
Unscrewing
1. Attach the adapter to the lug lock bolt.
2. Unscrew the lug lock bolt.
3. Remove the adapter after unscrewing the
lug bolt.
If it is necessary to change a wheel on a slight
downhill gradient, place chocks and other suit-
able objects, e.g., rocks, under the wheels of
the front and rear axles, against the direction
that the vehicle will move.
Screwing on
1. Attach the adapter to the lug lock bolt. Turn
the adapter until it fits onto the wheel lock
bolt.
2. Screw on the lug lock bolt. The tightening
torque is 101 lbs ft/140 Nm.
3. Remove the adapter and stow it after
screwing on the lug bolt.
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Wheels and tires
MOBILITY
Safety precautions
Jacking up the vehicle
▷
Park the vehicle on solid and non-slip
ground at a safe distance from road traffic.
Turn on the hazard warning system.
Set the parking brake.
Warning
▷
▷
▷
Hands and fingers can be jammed when us-
ing the jack. There is a risk of injury. Comply
with the described hand position and do not
change this position while using the jack.
Turn the steering wheel until the front
wheels are in the straight-ahead position
and engage the steering wheel lock.
1. Hold the vehicle jack with one hand, ar-
row 1, and grasp the jack crank handle or
lever with your other hand, arrow 2.
▷
▷
Engage a gear or move the selector lever to
position P.
As soon as permitted by the traffic flow,
have all vehicle occupants get out and
make sure that they remain outside the
hazardous area such as behind a guardrail.
▷
▷
If necessary, set up the hazard triangle or
hazard warning lights at an appropriate
distance.
Depending on vehicle equipment, remove
the wheel change set and, if necessary, the
emergency wheel from the vehicle.
2. Insert the jack into the rectangular recess of
the jacking point closest to the wheel to be
changed.
▷
▷
Secure the vehicle additionally against roll-
ing away.
Loosen the lug bolts a half turn.
Jacking points
3. Extend the jack by turning the jack crank
handle or lever clockwise.
The jacking points are located at the indicated
positions.
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Wheels and tires
MOBILITY
4. Take your hand away from the jack as soon
as the jack is under load and continue turn-
ing the jack crank handle or lever with one
hand.
After the wheel change
1. Tighten the lug bolts crosswise. The tight-
ening torque is 101 lbs ft/140 Nm.
2. Stow the faulty wheel in the cargo area, if
necessary.
5. Make sure that the car jack foot extends
vertically and is at a right angle beneath the
jacking point.
3. Check tire inflation pressure at the next op-
portunity and correct as needed.
4. Re-initialize the flat tire monitor or reset the
Tire Pressure Monitor.
5. Check to make sure the lug bolts are tight
with a calibrated torque wrench.
6. Drive to the nearest authorized service cen-
ter or another qualified service center or
repair shop, then have the damaged tire
replaced.
6. Crank the vehicle up until the entire jack
surface is on the ground and the cor-
responding wheel is lifted max. 1.2 in-
ches/3 cm above the ground.
Mounting a wheel
Mount one emergency wheel only, as required.
1. Unscrew the lug bolts.
2. Remove the wheel.
3. Put the new wheel or emergency wheel on
and screw in at least two lug bolts in a
crosswise pattern until hand-tight.
When non-original light-alloy wheels of the
vehicle manufacturer are mounted, the ac-
companying lug bolts may have to be used
as well.
4. Hand-tighten the remaining lug bolts and
tighten all lug bolts well in a crosswise pat-
tern.
5. Turn the jack crank handle counterclock-
wise to retract the jack and lower the vehi-
cle.
6. Remove the jack and stow it securely.
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