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(FM8) SEMCON JLR OWNER GUIDE VER 1.00 EURO
LANGUAGE: english-en; MARQUE: jaguar; MODEL: XJ
Tyres
177
TYRE VALVES
Keep the valve caps screwed down firmly to
prevent water or dirt entering the valve. Check
the valves for leaks when checking the tyre
pressures.
PUNCTURED TYRES
Do not drive the vehicle with a
punctured tyre. Even if the punctured
tyre has not deflated, it is unsafe to
use, as the tyre may deflate suddenly
at any time.
REPLACEMENT TYRES
Always fit replacement tyres of the
same type, and wherever possible of
the same make and tread pattern.
If the use of tyres not recommended by
Jaguar is unavoidable, ensure that
you read, and fully comply with, the
tyre manufacturer’s instructions.
Ideally, tyres should be replaced in sets of four.
If this is not possible, replace the tyres in pairs
(both front or both rear). When tyres are
replaced, the wheels should always be
re-balanced and alignment checked.
The correct tyre specification for your vehicle
can be found on the tyre placard label.
PRESSURE COMPENSATION FOR
AMBIENT TEMPERATURE CHANGE
A colder ambient local temperature will reduce
pressure within the tyre. An effect is to
decrease sidewall height and to increase tyre
shoulder wear with the potential for tyre failure.
Vehicle dynamics could also be adversely
affected.
Tyre pressures can be adjusted to compensate
before the start of the journey. Alternatively,
tyre pressures can be adjusted when the area
of lower ambient temperature is reached.
In this situation, the vehicle must be left in the
ambient local temperature for at least one hour
before tyre pressure is adjusted.
To compensate for colder ambient
temperatures, tyre pressures should be
increased by 0.14 bar (2psi, 14 kPa) for each
10°C (20°F) decrease.
Note: Ensure that correct tyre pressures are
maintained when moving to areas of differing
ambient temperature.
AVOIDING FLAT SPOTS
In order to minimise flat spotting, the tyre
pressures can be increased to the maximum as
stated on the tyre sidewall, for the period when
the vehicle is stationary. Tyres must be
returned to the specified running pressures
before driving.
TYRE DEGRADATION
Tyres degrade over time due to the effects of
ultraviolet light, extreme temperatures, high
loads, and environmental conditions. It is
recommended that tyres are replaced at least
every six years, but they may require
replacement more frequently.
USING WINTER TYRES
Do not exceed 240 km/h (150 mph) when
using Jaguar approved winter tyres.
Winter tyres must be fitted to all four wheels.