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EnglishWheels and tires -> Repairing a flat tire for your BMW i4 2021-2025
Wheels and tires
MOBILITY
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Do not leave the tires in plastic bags.
Remove dirt from wheels or tires.
Identification
Runflat tires
Principle
Runflat tires permit continued driving under
limited conditions even in the event of a com-
plete tire pressure loss.
Runflat tires are labeled with a circular icon
containing the letters RSC marked on the tire
sidewall.
General information
The wheels consist of tires that are self-sup-
porting to a limited degree and may also in-
clude special rims.
Repairing a flat tire
The reinforcement of the sidewall allows the
tire to remain drivable to a limited degree in
the event of a tire pressure loss.
Safety precautions
Follow the instructions for continued driving
with a flat tire.
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Park the vehicle on solid and non-slip
ground at a safe distance from road traffic.
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Turn on the hazard warning system.
Set the parking brake.
Safety information
Turn the steering wheel until the front
wheels are in the straight-ahead position
and engage the steering wheel lock.
Warning
The vehicle handles differently when a runflat
tire has insufficient or no tire pressure; for
instance, reduced directional stability when
braking, braking distances are longer and the
self-steering properties will change. There is
a risk of accident, injury, and property dam-
age. Drive moderately and do not exceed a
speed of 50 mph/80 km/h.
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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.
Warning
Tire repair set
Vibrations or loud noises while driving can
indicate the final failure of a tire. Tire compo-
nents may come loose. There is a risk of ac-
cident, injury, and property damage. Reduce
your speed and stop. Do not continue driving.
Contact an authorized service center or an-
other qualified service center or repair shop.
Principle
The tire repair set is used to temporarily seal
minor tire damage so that it is possible to con-
tinue driving.
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Wheels and tires
MOBILITY
Compressor
General information
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The filled in tire sealant closes the damage
from the inside when it hardens.
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Follow the instructions for using the tire
repair set, which are provided on the com-
pressor and sealant bottle.
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The tire repair set may be insufficient if the
tire damage measures more than approx.
0.16 in/4 mm.
Do not remove foreign objects that have
penetrated the tire. Remove foreign objects
only when they are visibly protruding from
the tire.
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Compressor
2
3
4
5
6
Tire pressure display
Sealant bottle mount
Pressure reducing valve button
Connector for socket
Power switch
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The compressor can be used to check the
tire inflation pressure.
Overview
Storage
Safety precautions
Depending on vehicle equipment, the tire re-
pair set is stored as follows:
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Park the vehicle as far away as possible
from passing traffic and on solid ground.
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In the cargo area under the cargo area
floor.
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Turn on the hazard warning system.
Set the parking brake.
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In the cargo area on the left or right side.
In the cargo area behind a side trim panel.
Turn the steering wheel until the front
wheels are in the straight-ahead position
and engage the steering wheel lock.
Sealant bottle and filler hose
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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.
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If necessary, set up the hazard triangle or
hazard warning lights at an appropriate
distance.
Remove the warning label for the maximum
permissible speed from the sealant bottle
and attach it in the visible area in the vehi-
cle interior.
1
Sealant bottle
2
3
4
5
Sealant bottle outlet
Filler hose
Sealant bottle connection
Wheel valve connection
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Wheels and tires
MOBILITY
5. Screw the filler hose connector clockwise
onto the valve.
Preparing the tire repair set
1. Insert the sealant bottle into the mount on
the housing of the compressor.
6. With the compressor switched off, insert the
connector into the power socket in the vehi-
cle interior.
2. Turn the sealant bottle clockwise by 90° to
the stop.
Filling the tire with sealing
compound
Safety information
NOTICE
The compressor can overheat during ex-
tended operation. There is a risk of property
damage. Do not run the compressor for more
than 10 minutes.
3. Connect the filler hose to the outlet of the
sealant bottle and turn clockwise by 90° to
the stop.
Filling the tire with sealing compound
1. With standby state or drive-ready state on,
turn on the compressor on the device.
Let the compressor run for max. 10 minutes
to fill in the tire sealant and reach a tire
pressure of 2.5 bar/36 psi.
While the tire is being filled with tire sealant,
the tire pressure can briefly reach approx.
6 bar/87 psi. Do not turn off the compres-
sor in this phase.
4. Unscrew the valve cap on the wheel.
2. Turn off the compressor on the device.
Checking the tire pressure
Read the tire pressure on the tire pressure dis-
play of the compressor. The tire pressure must
be at least 2.5 bar/36 psi.
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Wheels and tires
MOBILITY
4. Screw the filler hose connector onto the
valve.
Tire pressure too high
If the tire pressure is too high, reduce the tire
pressure with the pressure reducing valve on
the compressor.
Minimum tire inflation pressure is not
reached
Do not continue driving unless a minimum tire
pressure of 2.5 bar/36 psi is reached. Contact
an authorized service center or another quali-
fied service center or repair shop.
5. Insert the connector into the socket in the
vehicle interior.
Minimum tire inflation pressure is
reached
1. Pull the connector out of the socket in the
vehicle interior.
6. Read the tire pressure on the tire pressure
display of the compressor.
Do not continue driving unless a minimum
tire pressure of 1.3 bar/19 psi is displayed.
Contact an authorized service center or an-
other qualified service center or repair shop.
2. Disconnect the filler hose from the sealant
bottle and the valve on the wheel.
3. Screw the valve cap onto the valve.
7. Correct the tire pressure to 2.5 bar/36 psi.
4. Stow the tire repair set in the cargo area.
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Increase tire pressure: with standby or
drive-ready state turned on, turn on the
compressor and let it run for a maxi-
mum of 10 minutes.
5. Immediately drive 6 miles/10 km to ensure
that the tire sealant is evenly distributed in
the tire.
Do not exceed the speed limit of
50 mph/80 km/h.
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Reduce tire pressure: Press the pres-
sure reducing valve button on the com-
pressor.
If possible, do not drive at speeds less than
12 mph/20 km/h.
Tire sealant may spray from the damaged
area during the initial wheel rotations.
Removing and stowing the tire
repair set
1. Switch off the compressor.
Adjusting the tire pressure
1. Stop at a suitable location.
2. Pull the connector out of the socket in the
vehicle interior.
2. Connect the filler hose directly to the com-
pressor, then turn it clockwise 90° in the
mount until it engages audibly.
3. Disconnect the filler hose from the com-
pressor and the valve on the wheel.
4. Screw the valve cap onto the valve.
3. Unscrew the valve cap on the wheel.
5. Stow the tire repair set together with the
filler hose in the cargo area.
Continuing the trip
Re-initialize the flat tire monitor or reset the
Tire Pressure Monitor.
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Wheels and tires
MOBILITY
Do not exceed the speed limit of
50 mph/80 km/h.
Fine-link snow chains
The manufacturer of the vehicle recommends
the use of fine-link snow chains. Certain types
of fine-link snow chains have been tested by
the manufacturer of the vehicle and recom-
mended as road-safe and suitable.
Do not exceed a maximum distance traveled of
125 miles/200 km.
Replace the faulty tire and the sealant bottle
from the tire repair set as soon as possible.
For information on suitable snow chains, con-
tact an authorized service center or another
qualified service center or repair shop.
Additional information:
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Flat tire monitor, refer to page 323.
Tire pressure monitor, refer to page 316.
Use
System limits
Use is only permitted in pairs on rear wheels
equipped with the tires of the following wheel/
tire sizes:
If the tire cannot be made drivable, contact an
authorized service center or another qualified
service center or repair shop.
Tire size
Wheel size Rim offset (IS)
36
With Tire Pressure Monitor: Using sealant can
damage the air pressure sensor. In this case,
have the electronics checked and replaced at
the next opportunity.
245/45 R18 8.5J x 18
Information on the wheel size and rim offset is
located on the inside of the wheel.
The list can also include wheel/tire sizes that
are only suitable for certain models.
Snow chains
Safety information
Warning
Information on wheels and tires approved for
the vehicle can be requested from an author-
ized service center or another qualified service
center or repair shop.
Follow the snow chain manufacturer's instruc-
tions.
Mounting snow chains on unsuitable tires
can cause the snow chains to come into
contact with vehicle parts. There is a risk of
accident, injury, and property damage. Only
fit snow chains on tires recommended by
the vehicle manufacturer for use with snow
chains.
If vehicle is equipped with Tire Pressure Moni-
tor: When using snow chains, do not reset the
Tire Pressure Monitor, otherwise, incorrect val-
ues may be displayed.
If vehicle is equipped with flat tire monitor:
When using snow chains, do not initialize the
flat tire monitor, otherwise, incorrect values
may be displayed.
Warning
Insufficiently tight snow chains may damage
tires and vehicle components. There is a
risk of accident, injury, and property damage.
Make sure that the snow chains are always
sufficiently tight. Re-tighten as needed ac-
cording to the snow chain manufacturer's in-
structions.
When driving with snow chains, activate the
Dynamic Traction Control briefly to optimize
the drive power.
Maximum speed with snow chains
Do not exceed a speed of 30 mph/50 km/h
when using snow chains.
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