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TYRE PRESSURES

WARNING

All tyre pressures, including the spare, should be checked regularly using an accurate tyre pressure gauge, when the tyres are cold. Failure to properly maintain your tyre pressures could increase the risk of tyre failure, resulting in a loss of vehicle control and potential personal injury.

WARNING

Pressure checks should only be carried out 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.

WARNING

Never drive the 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.

WARNING

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. Replace the tyre or contact an approved repairer.

WARNING

Under-inflation also reduces energy economy and tyre tread life and may affect the vehicle’s handling and stopping ability.

WARNING

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. Allow the tyres to cool before rechecking the pressures.

The recommended tyre pressures for all loads are listed on a label located at the base of the driver’s door opening.

The loading of the vehicle should always be considered when checking and adjusting the tyre pressures.

Check the tyres, including the spare, for condition and pressure on a weekly basis and before long journeys.

Dependent on the market, the tyre pressures can be displayed in the instrument panel using the Vehicle info and Tyre pressure check menus. The display shows two tyre pressures for each tyre. The upper figure is the present tyre pressure and the lower figure is the recommended tyre pressure in brackets. See INSTRUMENT PANEL MENU

NOTES

The tyre pressure units can be configured to display as either psi, bar, or kPa via the Display menu.

If the 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 0.14 bar (2 psi, 14 kPa) 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, expect the pressures to have increased by up to 0.3 - 0.4 bar (4 - 6 psi, 30 - 40 kPa). 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 pressures:

NOTES

Make sure that the tyre pressures are set for the correct vehicle load.

CAUTION

To avoid damaging the valves, do not apply excessive force or sideways force on the gauge and/or inflator.

CAUTION

To avoid damage to the Tyre Pressure Monitoring System (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.

  1. Remove the tyre valve cap.

  2. Firmly attach a tyre pressure gauge and/or inflator to the valve.

  3. Read the tyre pressure from the gauge and add air, if required.

  4. 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.

  5. If the tyre pressure is too high, remove the gauge and press the centre of the valve to allow air out of the tyre. Refit the gauge to the valve and check the pressure.

  6. Repeat the process, adding or removing air as required, until the correct tyre pressure is reached.

  7. Refit the valve cap.