​The Importance of Tyre Pressure for your Safety


Safety for yourself and others should be your primary concern when setting out on any journey. Tyre pressure plays a critical part in ensuring everyone's safety while travelling.

A report from the Road Safety Authority (RSA) revealed that in-vehicle 1 out of 8 deadly collisions, defective tyres were the most significant factor. Since then, rising fuel costs have seen more and more road users forgoing regular car maintenance – most critically of all on their tyres where correct pressure is the key component in keeping you safe under the majority of road conditions.

Correct air pressure in a tyre helps to distribute the weight of your vehicle evenly across the tyre’s tread pattern so that the tyre – and the vehicle itself – is at its most stable. When a tyre is over-or under-inflated, it loses stability, negatively affecting handling, cornering and stopping. Eventually, the tyre will also start to wear unevenly and … you’re heading for trouble.

How to handle the pressure

How often should you check your tyre pressure?

Ideally, you should check it every two weeks; however, a good rule of thumb is to do it every time you fill up with fuel or at least once a month.

Always remember to check your tyres when they are cold, first thing in the morning of at least three hours after you were last on the road.

For each car and make, tyre pressure will vary. Often, so does front and rear pressure. To find the correct air pressure for your tyres, check the information on the inside driver’s side panel of your car, your owner’s manual, the inside of your glove compartment door or the inside of your petrol lid.

Always use a reliable air pressure gauge – either by yourself or by a trained and practised garage attendant.

Always remember to check your spare tyre’s pressure too and make sure all your tyre valves have caps and replace any missing ones immediately. This prevents dust and other particles from entering your valves and inner tyres and compromising your air pressure.

Over-inflation vs. under-under-inflation – why both are potentially problematic

Both over- and under-inflation reduce optimum tyre-to-road contact and shorten tyre life.

Over-inflation, like under-loading, reduces the cushioning power of your tyres. They are then more susceptible to impact, penetrations and abrasions as well as reduced road-tyre contact. This negatively affects the handling characteristics of the vehicle and leads to excessive centre tread wear.

Under-inflation, like overloading, causes excessive flexing of the tyres’ sidewalls, which leads to overheating, and, ultimately, casing break-up and tread separation. Also, the reduced tyre-road contact leads to shoulder wear and badly affects vehicle handling. And never forget, under-inflation is the major cause of tyre blowouts!

Tyre pressure impacts on vehicle performance – and your passenger’s safety

Maintaining the correct tyre pressure can actually increase the lifespan of your tyres. Even if your tyres are under-inflated by just 0.5 to 1 bar, this can decrease the lifespan by as much as 25%.

Also, having your tyres even slightly under-inflated has the potential of increasing your fuel consumption by more than 5%.

Under-inflated tyres hazardously increase your stopping distance at normal speeds by more than 8 metres. This figure increases with heavier vehicles and the dangers are compounded when the weather is windy or wet.

Under-inflation is a leading cause of tyre failure. This is because more friction is created if more of the tyre’s surface is touching the road. This friction can lead to overheating, premature wear and tear, tread separation, and – most alarmingly – total tyre blowouts!

The centre tread on over-inflated tyres tends to wear out faster. The ‘tippy toe’ qualities of an over-inflated tyre make it unsafe in cornering and because the tyre is stiffer and more rigid, it is more prone to damage from hitting potholes or striking curbs. Overall, of course, over-inflation reduces tyre lifespan too, costing you more in the long run due to excessive wear and tear.

Don’t put yourself under pressure – keep your tyres in check with the professionals

Contact our Service Centre if you have any questions https://www.pupkewitz-motors.com/