Land Rover Discovery: Tyre pressures
- All tyre pressures, including the
spare, should be checked
regularly using an accurate
pressure gauge, when the tyres
are cold.
- Pressure checks should be carried
out only when the tyres are cold,
and the vehicle has been
stationary for more than 3 hours.
A hot tyre at, or below, the
recommended cold inflation
pressure, is dangerously
under-inflated.
- Never drive your vehicle if the
tyre pressures are incorrect.
- Under-inflation causes excessive
flexing and uneven tyre wear. This
can lead to sudden tyre failure.
Over-inflation causes harsh ride,
uneven tyre wear and poor
handling.
- Do not drive the vehicle with a
leaking tyre. Even if the tyre
appears to be inflated, it could be
dangerously under-inflated and
will continue to deflate. Renew
the tyre or contact an approved
repairer.
- Under-inflation also reduces fuel
efficiency and tyre tread life and
may affect the vehicle's handling
and stopping ability.
- If the vehicle has been parked in
strong sunlight, or used in high
ambient temperatures, do not
reduce the tyre pressures. Move
the vehicle into the shade and
allow the tyres to cool before
rechecking the pressures.
The tyre information label is located on
the driver's side B pillar.
Check the tyres, including the spare, for
condition and pressure on a weekly basis
and before long journeys.
If tyre pressures are checked while the
vehicle is inside a protected covered area
(e.g., a garage) and subsequently driven
in lower outdoor temperatures, tyre
under-inflation could occur.
A slight pressure loss occurs naturally with
time. If this exceeds 14 kPa (0.14bar/2 psi)
per week, have the cause investigated and
rectified by qualified personnel.
If it is necessary to check the tyre
pressures when the tyres are warm, you
should expect the pressures to have
increased by up to 30 - 40 kPa (0.3 - 0.4
bar/4 - 6 psi). Do not reduce the tyre
pressures to the cold inflation pressure
under these circumstances. Allow the tyres
to cool fully before adjusting the
pressures.
The following procedure should be used
to check and adjust the tyre's pressures:
- To avoid damaging the valves, do
not apply excessive force or
sideways force on the gauge/
inflator.
- To avoid damage to TPMS valves,
it is recommended not to use rigid
tyre inflation wands. This is to avoid
the risk of excess leverage and
sideways pressure on the valve.
- Remove the valve cap.
- Firmly attach a tyre pressure gauge/
inflator to the valve.
- Read the tyre pressure from the gauge
and add air, if required.
- If air is added to the tyre, remove the
gauge and re-attach it before reading
the pressure. Failure to do so may
result in an inaccurate reading.
- If the tyre pressure is too high, remove
the gauge and allow air out of the tyre
by pressing the centre of the valve.
Refit the gauge to the valve and check
the pressure.
- Repeat the process, adding or
removing air as required, until the
correct tyre pressure is reached.
- Refit the valve cap.
TYRE VALVES
Keep the valve caps screwed down firmly
to prevent water or dirt from entering the
valve. Check the valves for leaks when
checking the tyre pressures.
Do not twist or bend the valves
when attaching a pressure hose or
gauge, as damage may result.
READ NEXT:
Always fit replacement tyres of
the same type, and wherever
possible, of the same make and
tread pattern. Failure to fit the
same type, make and tread
pattern may reduce vehicle
stability.
Th
In many countries legislation exists that
requires the use of winter tyres during
specified periods of the year.
M+S (mud and snow) tyres have a
recognised level of winter performance
and need not be
Only use traction devices in heavy
snow conditions, on compacted
snow.
Never exceed 50 km/h (30 mph)
when traction devices are fitted.
Never fit traction devices to a
temporary use spare wheel
SEE MORE:
Fault codes and diagnostics can be retrieved/achieved using the
manufacturer approved diagnostic system
Hard Key Test
The hard key test is used to check the operation of the hard switches.
If switch operation is normal, the switch colour on the screen will change
when a hard switch is pressed. (Pow
When the Progress control system is
enabled, the desired target (set) speed for
the vehicle can be set and adjusted via
the Cruise control buttons, mounted on
the right side of the steering wheel
SET+: While the vehicle is moving,
press to enable the Progress control
system, to recognise that th