Ford Galaxy 2007, Owner'S Handbook Manual, Page: 252 / 312

RUN FLAT TYRES
Principle of operation
Standard tyre
B
A
C
E75207
Wheel rim position with
correct tyre pressure A
Wheel rim position with
insufficient tyre pressure B
Tyre C
Run flat tyre
B
D
C
A
E87667
Wheel rim position with
correct tyre pressure A
Wheel rim position with
insufficient tyre pressure B
Tyre C
Reinforced sidewall D
When a standard tyre experiences a
drastic loss of inflation pressure, the
rim of the wheel brings the full weight
of the vehicle to bear on the
collapsed sidewalls. You can barely
manoeuvre the vehicle and the tyre
is destroyed.
Run flat tyres have sturdy, reinforced
sidewalls that support the rim should
the tyre suffer a loss of inflation
pressure.
What to do if a run flat tyre
has a puncture
Due to the run-flat properties of
these tyres, you may not notice any
tyre defect. To make sure you are
aware of the tyre defect, your vehicle
is equipped with a tyre pressure
monitoring system that alerts you to
any drop in tyre pressure. See
Technical specifications (page
253).
In the event of a tyre defect:
• immediately slow down to a
maximum of 80 km/h (50 mph)
• avoid sudden or erratic braking
and steering manoeuvres and be
especially careful negotiating
bends
• do not drive more than 80
kilometres (50 miles) after the
defect is detected
• have the defective tyre replaced
as soon as possible.
250
Wheels and tyres