2016 Discovery 4

CHECKING THE TIRE PRESSURES

WARNING

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

WARNING

If the tires are deflated to the light load setting or inflated to the heavy load setting, then the TPMS will have to be adjusted to suit the vehicle load and tire pressures. See .

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 recommended cold inflation pressure, is dangerously under-inflated.

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 or contact an approved repairer.

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

If tire pressures are checked while the vehicle is inside a protected covered area (e.g. a garage) 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, you should 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. See TIRE PRESSURES.

The following procedure should be used to check and adjust the tires pressures.

CAUTION

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

  1. Remove the valve cap.

  2. Firmly attach a tire pressure gauge/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 allow air out of the tire by pressing the center of the valve. 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.