The right tyre pressure
- Tyre pressure is measured in kilopascals (kPa) or pounds per square inch (psi).
- Keep your tyres inflated to the pressure recommended by the car manufacturer — usually shown on a sticker inside the driver’s door frame, in the glovebox or on the petrol tank flap.
- The car manufacturer’s recommendations refer to the pressure when the tyre’s cold, not after you’ve been driving for some time — so do your check at the petrol station down the road, not halfway through your journey.
- When driving with a heavy load such as a trailer, inflate your tyres to a higher pressure — check the sticker.
- Driving with under-inflated tyres uses more petrol, adversely affects the car’s handling and may lead to tyre damage.
- Check the pressure regularly — make it a habit each time you fill up with petrol.
- And don’t forget to check the spare’s air pressure when you do the other tyres. There’s nothing worse…
Tyre maintenance tips
- When you check the pressure, also do a visual check for objects embedded in the tread, such as stones or glass.
- Check for uneven wear, which could indicate a problem with the car’s steering or suspension.
- Run your hands over the tread and sidewalls to identify any bubbles, cuts or cracks.
- Keep an eye on the tyres’ tread wear indicators, which show the minimum legal tread of 1.6 mm. The indicators are small bars spaced across the grooves of the tyre’s tread pattern. Replace your tyres when the tread level reaches the indicators — at the latest.
- Rotate the tyres regularly — for example, at every service.
- When putting on new tyres, have them balanced and a wheel alignment done.
How inflation affects tread-to-road contact
Overinflation Underinflation Proper inflation
Both overinflation and underinflation reduce tread contact with the road. Proper inflation assures maximum contact.