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TIRE PRESSURES

Make sure that the following warnings are read and fully understood. Failure to comply with the safety instructions may result in an accident, leading to serious injury or death.

WARNING

All tire pressures, including the spare, should be checked regularly using an accurate tire pressure gauge, when the tires are cold. Failure to properly maintain your tire pressures could increase the risk of tire failure.

WARNING

Pressure checks should only be carried out when the tires are cold, and the vehicle has been stationary for more than 3 hours. A hot tire at, or below, the recommended cold inflation pressure, is dangerously under-inflated.

WARNING

Never drive your vehicle if the tire pressures are incorrect. Under-inflation causes excessive flexing and uneven tire wear. This can lead to sudden tire failure. Over-inflation causes harsh ride, uneven tire wear, and poor handling.

WARNING

Do not drive the vehicle with a leaking tire. Even if the tire appears to be inflated it could be dangerously under-inflated and will continue to deflate. Replace the tire or contact an approved repairer.

WARNING

Under-inflation also reduces energy economy and tire 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 tire pressures. Move the vehicle into the shade and allow the tires to cool before rechecking the pressures.

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

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

NOTES

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

If the tire pressures are checked while the vehicle is inside a covered area, and subsequently driven in lower outdoor temperatures, tire under-inflation could occur.

A slight pressure loss occurs naturally with time. If this exceeds 2 psi (0.14 bar, 14 kPa) per week, have the cause investigated and rectified by qualified personnel.

If it is necessary to check the tire pressures when the tires are warm, expect the pressures to have increased by up to 4 - 6 psi (0.3 - 0.4 bar, 30 - 40 kPa). Do not reduce the tire pressures to the cold inflation pressure under these circumstances. Allow the tires to cool fully before adjusting the pressures.

The following procedure should be used to check and adjust the tire pressures:

  1. Remove the valve cap.

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

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

  4. If air is added to the tire, remove the gauge and re-attach it before reading the pressure. Failure to do so may result in an inaccurate reading.

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

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

  7. Refit the valve cap.

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 TPMS valves, it is recommended not to use rigid tire inflation wands. Rigid tire inflation wands increase the risk of excess leverage and sideways pressure on the valve.

Light Load (3 occupants plus luggage)
Tire size Inflation pressure for all speeds
Front axle psi (bar) Rear axle psi (bar)
235/65 R18 110 V 37 (2.5, 250) 37 (2.5, 250)
245/50 R20 105 V 37 (2.5, 250) 37 (2.5, 250)
255/40 R22 103 V 37 (2.5, 250) 37 (2.5, 250)
T 175/80 R19 122 M 60 (4.2, 420)
Normal Load (up to 5 occupants plus luggage)
Tire size Inflation pressure for all speeds
Front axle psi (bar) Rear axle psi (bar)
235/65 R18 110 V 38 (2.6, 260) 45 (3.1, 310)
245/50 R20 105 V 37 (2.5, 250) 44 (3.0, 300)
255/40 R22 103 V 40 (2.7, 270) 48 (3.3, 330)
T 175/80 R19 122 M 60 (4.2, 420)
WARNING

The loading of the vehicle should always be considered when checking and adjusting tire pressures. Failure to do so may lead to serious injury or death.