BMW X1 Owner's Handbook Manual page 114

Controls
Run-flat tyres
Top speed
If a tyre has punctured you can continue your
journey, driving at speeds up to a maximum of
80 km/h, 50 mph.
Continuing a journey with a flat tyre
If you continue a journey with a flat tyre:
1. Avoid violent or sudden braking and steer‐
ing manoeuvres.
2. Do not exceed a speed of 80 km/h, 50 mph
any longer.
3. As soon as you get an opportunity, check
the tyre pressure in all four tyres.
If all four tyres are inflated to the correct
tyre inflation pressures, the Tyre Pressure
Monitor might not have been reset. Then
run reset.
Maximum possible distance with tyres entirely
deflated:
The possible driving distance with a flat tyre
depends on the load and strain on the vehicle
during the journey.
With a moderate vehicle load, it is possible to
travel approximately 80 km, 50 miles.
During the journey driving with damaged tyres,
the vehicle handling changes, for example
quicker loss of traction when braking, longer
braking distance and modified self-steering
behaviour. Adapt driving style accordingly.
Avoid abrupt steering or driving over obsta‐
cles, for example curbs, potholes etc.
As the possible driving distance largely de‐
pends on the strain on the vehicle during the
journey, this can be shorter, or longer if the
driving style is more careful, according to
speed, road condition, outside temperature,
load etc.
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WARNING
A damaged tyre with run-flat properties
with low or missing tyre inflation pressure will
change the driving properties, for example re‐
duced directional stability when braking, lon‐
ger braking distance and modified self-steer‐
ing behaviour. Danger of accidents.
Drive with care and do not exceed a speed of
80 km/h, 50 mph.◀
WARNING
Continuing to drive with a flat tyre can re‐
sult in particularly heavy trailers starting to sla‐
lom. Danger of accident or damage to prop‐
erty.
When driving with a trailer and a flat tyre, do
not exceed the speed of 60 km/h, approxi‐
mately 35 mph.
In case of swaying or fishtailing motions, brake
immediately and make the necessary steering
corrections as carefully as possible.◀
Final tyre failure
Vibration or loud noises during the journey
may be an indication that the tyre has finally
failed.
Reduce your speed and stop the vehicle. Parts
of the tyre could detach, which could lead to an
accident.
Do not continue driving, but contact a Service
Partner or a qualified specialist workshop.
Message with required tyre inflation
pressure test
In such situations, a check control message is
displayed:
▷ System has detected a wheel change, but
no reset has been run.
▷ Filling was not performed according to the
regulations.
▷ The tyre inflation pressure has dropped
compared to the last confirmation.
If that is the case: