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Why is correct tyre pressure important?

By maintaining the correct tyre pressure, you can save money by improving your car’s fuel economy, extend the life of your tyres, so costly replacements occur less frequently, and increases the safety of your car in almost every driving condition.

If your tyres are not properly inflated, they become the weak link in your car’s safety chain. It’s just four patches of rubber, only about the size of the palm of your hand, that connect your entire car to the road.

Determining the Proper Inflation Pressure

A key component of proper car care, maintaining the correct tyre pressure is a simple task. The tyre pressure specified by the car manufacturer, in this case Citroën, is marked on a label inside the driver’s door of the car, as well as in your car owners’ manual. The tyre pressure indicated on that label is the pressure you should use to inflate and check the tyres when cold. Your owner’s manual will define what Citroën has determined is the appropriate cold condition to measure inflation pressure (typically how far or long you’ve driven or how long the car has been parked).

Why is correct tyre pressure important?

It is important to remember that the proper inflation pressure is not that which is stamped on the tyre. That is only the tyre manufacturer’s maximum pressure and by filling your tyres you can create several problems for yourself, as you’ll soon see.

Risks of Underinflation

Underinflated tyres wear much more quickly than properly inflated tyres, especially on the shoulder area. There’s simply not enough air pressure to hold the tread flat against the road. The greatest risk of an underinflated tyre is that the tyre could overheat, which causes the inner structure of the tyre to disintegrate due to excessive flexing and can lead to blow out suddenly and unexpectedly, at any speed or condition.

Risks of Overinflation

There’s a misconception that continues that better fuel economy is achieved at a passenger tyre’s maximum inflation pressure marked on the sidewall or even higher. While this does lower the rolling resistance whatever same gain you achieve in fuel economy is quickly offset by increased wear and potential safety risks. For example it will increase center tread wear, but more importantly, it will reduce the car’s stopping distance in wet weather. This is because you’re driving on only the very center of the tread. If the tyre is excessively inflated, it could cause a catastrophic failure as the tyre heats up in use on long motorway excursion on a hot day.

Economical Operation

As both overinflation and underinflation will cause premature tyre wear, if you drive under either of those conditions you’ll have to replace your tyres more frequently, which can be a costly expense. Maintaining the correct air pressure and rotating tyres based on the schedule recommended by Citroën are the best ways to extend the life of your tyres.

Impact on the Environment

Properly inflated tyres reduce fuel consumption. While not likely to be significant on a tank-by-tank basis with the over 30 million of cars on the road in the UK we could reduce our reliance on imported oil by millions gallons of petrol every year. Reduced fuel consumption means less Carbon Monoxide and other pollutants in our atmosphere as well.

The Citroën Tyre Experts

At Sportif Citroën, we inspect the condition and inflation pressure of every car that passes through our service centre to make certain that your tyres are set to Citroën’s factory recommendations. If we note underinflation, overinflation, or any damage to a tyre, we will bring it to your attention.

Should you have any questions about your tyres, are having trouble locating the manufacturer’s recommended inflation pressure sticker, have some concerns about a wear pattern or an imbedded object in the tread, the tyre experts at Sportif Citroën are here to help.



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