166
Tread depth
Check tread depth regularly. Should the
front tyres show greater wea r than the rear
tyres, have both front wheels excha ng ed
with the rear wheels so that the tyres w ith
deeper tread are on the front axle.
For reasons of safety, tyres should be
rep la ced when their tread depth has worn
down to 2 to 3 mm (winter tyres: 4 mm).
The leg ally permissible minimum trea d
depth (1.6 mm) has been reached when
the tread has worn down as far as one of
the wear indicators (TWI
1)
). A number of
wear indicators are sp aced at eq ual
intervals around the tyre within the trea d.
Their position is indicated by m arkings on
the tyre sid ewall.
General information
z
The risk of aq ua planing is greater if the
tyres are worn.
z
Tyres age, even if they a re used only very
little or not at all. A spare wheel which
has not b een used for six years should be
used only in emergencies; drive slowly
when using suc h tyres.
z
Never fit used tyres the previous history
and use of which you do not k now.
z
So as not to impair b ra ke cooling, use
only wheel trims approved for use on
your vehicle.
Tyre d esigna tions
Meaning s:
e.g.
195/65 R 15 91 V
195
= Tyre width in mm
65
= Aspect ratio
(tyre height to tyre width) in %
R
= Belt type:
R
adial
15
= Wheel d ia meter in inches
91
= Load ind ex
e.g .: 91 for 618 kg (1362 lbs)
V
= Speed cod e
Speed code letters:
Q
Up to 160 km/h (100 mph)
S
Up to 180 km/h (112 mph)
T
Up to 190 km/h (118 mph)
H
Up to 210 km/h (130 mph)
V
Up to 240 km/h (150 mph)
W
Up to 270 km/h (168 mph)
1)
TWI
=
T
read
W
e
ar
I
ndicator.
Summary of Contents for 1994 Omega
Page 1: ...VAUXHALL Omega Owner s Manual ...
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Page 12: ...10 ...
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