Correct tire pressure is important for several reasons;

Tire pressures are quoted for cold tires and will be specified in your vehicle handbook and may be on a sticker inside the fuel flat, on the drivers (or passengers) door or even inside the glove box.

Normally there are two tire pressures quoted; one for "normal use" and a higher tire pressure for when the vehicle is underload. Make sure you adjust your tyre pressures accordingly.

If you don't know the correct tyre pressure for you vehicle, refer to the manufacturer's customer service department.

Never use the tire pressure quoted on the tyre sidewall. This pressure refers to the maximum inflation pressure a tyre can contain under maximum load.

You should check your tire pressures every month using a reliable and accurate tire pressure gauge.

Always measure tire pressure when tires are "cold". Tires are cold if they have not been driven for more than 2 miles at low speed or have been stationary for a least two hours.

The only accurate way to know if your tires need to be inflated (or deflated) is by measuring the pressure with a reliable and acurate tire pressure gauge.

A common misconception is that a visual check is sufficient to assess tire pressure. Tires can be significantly under or over-inflated by up to 20% and you may not be able to tell just by looking at them.

At the same time as checking your tire pressure, examine the tires for any cuts or bulges which must be assessed by a professional if found - a bulge in a tire indicates internal structural damage and must be replaced.

The tire must also be replaced if you find any cuts deep enough to reveal the internal structure of the tire.