Tyre pressure should, in principle, be checked on a regular basis, around once a month, when the tyre is cold. The spare wheel should also be inspected. Too little pressure makes driving more dangerous and leads to a significant increase in wear on the shoulder of the tyre. The vehicle’s user manual will state the correct pressure. This information can also be found on a sticker located on the door frame or in the fuel tank flap on many vehicles. Pressure should be increased by around 2 bar when carrying a heavier than usual load or travelling at a higher speed. Increasing pressure by 0.5 bar will improve handling but tends to reduce comfort.