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Wear Indicators
Wear indicators are moulded into
the bottom of the tread grooves at
intervals around the tire, indicated
by small pointers on the outer
tread blocks. The tires should be
replaced before being worn to this
minimum legal tread depth.
When driving on wet roads, surface
water is squeezed out from be-
tween the tire and road. However
excessive speed or water depth
can overwhelm the water clearing
capability of the tread and lead to
a condition called ‘aquaplaning’ or
‘hydroplaning’, where the tire rides
on a film of water and provides lit
-
tle or no grip on the road surface,
leading to a loss of control.
This condition is more likely to
occur with worn tires having little
depth of tread, or with incorrect
tire pressures.
Drivers should keep a vigilant
check on tire wear and condition,
and moderate their speed in ad-
verse weather conditions.
Tire Pressures
Recommended inflation pressure:
The cold tire inflation pressure
which is recommended for this car
and is specified in the ‘Technical
Data’ section of this handbook.
Cold tire inflation pressure:
All tires
must be cold, meaning that the car
has been stationary for a minimum
of 3 hours, or has been driven
less than 1 mile as the pressures
may increase when the tires are
warmed to normal running tem-
perature. Adjust pressures only in
ambient conditions.
Maximum inflation pressure:
The
maximum inflation pressure to
which the tire should be subjected.
For the Evora, use only the recom-
mended inflation pressure.
Under-inflation will cause exces
-
sive wear, rapid deterioration of
the tire sidewalls and heavy steer-
ing, whereas over-inflation results
in a hard ride and increased sus-
ceptibility to tire damage. Both
conditions will affect the handling
qualities.
Always replace the tire valve dust
cap to prevent the ingress of dirt
and moisture into the valve, which
could cause leakage. Many fuel
filling stations provide tire inflation
facilities. Follow their instructions
carefully.
WARNING
Over or under-inflated tires can
overheat, resulting in a blow
out which may cause a serious
accident.
Over-inflated tires are
more likely to be cut, punctured
or broken by a sudden impact -
such as hitting a pothole.
WHEELS & TIRES
E132T0324JA Federal Evora 400 From SOP OHB English Language.indd 91
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