Car Tyres
Tyre pressures
Tyre pressures are quoted for cold tyres and will be specified in the car handbook. They may be shown on a sticker inside the fuel filler flap or driver's door too.
Generally two figures will be quoted – one for 'normal' use and a higher figure for full loads. Be sure to adjust the pressures to suit the conditions.
If you don't know the correct tyre pressures refer to the vehicle manufacturer's customer services department.
Correct tyre pressure is important for several reasons:
- Tyre life – under or over inflation increases wear
- Fuel economy – under inflation increases fuel consumption
- Safety – under or over inflation will affect grip and braking performance
- Ride – over inflation can result in a harsh, uncomfortable ride
Check pressures every two weeks with the tyres cold using a reliable/accurate tyre pressure gauge.
Pressures should only be checked when cold which means the car should not have driven for hours prior to checking
At the same time, examine the tyres for any cuts, or bulges which must be checked out by a professional if found – a bulge in a tyre indicates internal structural damage and the tyre must be replaced.
The tyre must also be replaced if you find cuts deep enough to reveal the internal structure of the tyre.