Tips and advice; maintaining your tyres - Tyre pressure: to be checked once a month

Tyre pressure: to be checked once a month

Maintaining your tyres

Faced with considerable forces, your tyres lose a little air over time. For this reason, it is recommended to check their pressure regularly. This is an important operation for your safety and to prevent premature wear on your tyres.

Tyre pressure Remember to regularly verify the pressure of your tyres - Copyright © : All Rights Reserved

Pressure is an essential factor in the safety and life of your tyres. Under-inflation or over-inflation may have negative consequences on their performance.

Checkbox Icône Badly inflated tyres: what you risk
Checkbox Icône How to check tyre pressure?
Checkbox Icône What is the right pressure?
Checkbox Icône How often should I check tyre pressure?
Checkbox Icône Inflating tyres in the winter


Badly inflated tyres: what you risk

When the pressure is too high, the tread will warp, reducing the tyre's contact surface with the ground. This deformation has several consequences:

o   More rapid wear on the central part of the tyre;
o   Less grip, as the tyre hugs the road less;
o   Less absorbency of bumps and imperfections on the road.

Inversely, when the pressure is too low, the effort is transferred to the tyre’s shoulders, that are then overworked. Once again, this has a whole set of negative consequences:

o   Premature wear at the tyre’s shoulders;
o   Abnormal temperature rises in the tyre, which may cause a blow-out and loss of control of the vehicle;
o   Reduced road holding, especially on wet surfaces;
o   Greater fuel consumption.

Caution: nitrogen inflation does not exempt the need to check tyre pressure. 

Advice: for good tyre sealing, remember to replace the valve caps after checking tyre pressure. And change them when you fit new tyres.

How to check tyre pressure?

The pressure must always be checked cold. This means that your tyres have not driven for at least 2 hours or that they have driven less than 3 km at reduced speed. If you don’t have the time to let your tyres cool down, add 0.3 bars to the recommended pressure. Never deflate a hot tyre.

What is the right pressure?

The right pressure is the one recommended by the car maker. Recommended pressures (for the front and rear axle) are indicated in the user manual and/or on a sticker that you will find usually on the driver's door frame, on the fuel flap or in the glove compartment. Follow these indications: they are the result of numerous tests conducted by the tyre manufacturer and the car maker.

How often should I check tyre pressure?

Tyre inflation station at a gas stationCopyright © : All Rights Reserved
Tyre pressure should be checked at least once a month and before setting out on any long trip, especially if you are planning to take the motorway. It should be corrected if it no longer corresponds to the manufacturer's recommendations.

Advice: remember also to check the pressure of the spare tyre. This will avoid a nasty surprise on the day you might have to use it. Note, if the spare tyre is a "spacesaver", the recommended pressure is much lower than for an ordinary tyre. It can exceed 4 bars. The exact figure is usually shown on the rim. 

Inflating tyres in the winter

Air temperature has an effect on tyre pressure. The lower the air temperature, the lower the pressure measured. For this reason, you should add 0.2 bars to the reference pressure in the winter. 

 > Other articles in the Winter tyre section

B26 road sign on a snowy roadCopyright © : ©istockphoto - ermingut