Tyre Designations - Opel 2010 Astra H Owner's Manual

186 Vehicle care
Caution
Check tyre pressures regularly
even if run-flat tyres are fitted.
Depending on tyre manufacturer, run-
flat tyres can be identified from
a marking on the tyre wall. E.g.
ROF = RunonFlat for Goodyear or
SSR = Self Supporting Runflat Tyre
for Continental.
Use of run-flat tyres is only permitted
in combination with factory approved
alloy wheels.
Do not use a tyre repair kit.
The ECO tyre pressure must not be
used.
Run-flat tyres must not be combined
with standard tyres.
If converting to standard tyres, note
that the vehicle is not equipped with
a spare wheel or tyre repair kit.
Driving with a damaged tyre
A loss in tyre pressure is indicated by
the tyre pressure monitoring system
or the deflation detection system.
If a tyre has no pressure, continued
driving is possible
■ at a speed of max. 80 km/h
■ up to a distance of 80 km
9 Warning
The vehicle will be more difficult to
steer and handle. Braking
distance will be longer.
Adapt driving style and speed to
the changed conditions.

Tyre designations

E.g. 195/65 R 15 91 H
195 = Tyre width, mm
65 = Cross-section ratio (tyre
height to tyre width), %
R = Belt type: Radial
RF = Type: RunFlat
15 = Wheel diameter, inches
91 = Load index e.g. 91 is
equivalent to 618 kg
H = Speed code letter
Speed code letter:
Q = up to 160 km/h
S = up to 180 km/h
T = up to 190 km/h
H = up to 210 km/h
V = up to 240 km/h
W = up to 270 km/h
Tyre pressure
Check the pressure of cold tyres at
least every 14 days and before any
long journey. Do not forget the spare
wheel. This also applies to vehicles
with tyre pressure monitoring.
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