What Tyre Pressure Should My Car Be? Guide & Tips

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 by Chesca D
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Not sure what the correct tyre pressure for your car should be? This quick guide explains how to find your vehicle’s recommended PSI or Bar, how to check and adjust tyre pressure, and why it’s vital for safety, control, and fuel efficiency. Learn the simple steps to keep your tyres performing their best on every journey.

Tyre pressure refers to the amount of air that has been pumped into the tyre. 

Car and vehicle owners should be aware of their optimum tyre pressure and should know how to check and pump up their tyres as required, using stations which are located on the court of many petrol stations across the UK.

Tyre pressure in the UK is typically measured in Bar or PSI. Knowing what both of these mean, and where your vehicle and tyres sit on the Bar / PSI scale, ensures that you are well equipped to handle tyre maintenance on the road.

In this article, we’re sharing a quick guide to tyre pressure, how to determine the correct pressure for your car’s tyres, and how to set your tyres to the right pressure.

Why is Tyre Pressure Important?

When your tyres have too much air in them, they are more susceptible to damage from bumps and pot holes in the road.

What’s more, having tyres that are over or under-inflated can lead to a lack of control, affecting the stability of the vehicle and your ability to control, steer, and brake quickly. 

Tyre pressure is also linked with the even distribution of the vehicle’s weight among the four tyres of car, ensuring that they wear down at the same rate. 

Finally, having your tyres set and inflated to the right pressure improves the vehicle’s efficiency and fuel economy, and makes for a more comfortable drive.

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Where to Find The Right Pressure

The correct pressure for your vehicle’s tyres is found in the body of the vehicle itself, rather than on the tyre.

This is because it’s the weight and distribution of the vehicle that matters most when it comes to tyre pressure and how much air is inside them.

To find the optimum tyre pressure for your vehicle, open the driver door and look at the sticker located on the inner side wall next to the driver’s seat. There should be a table of options, which range from the vehicle with one or two passengers, to the vehicle when filled with luggage, and even a rating for towing (on vehicles with a tow bar). 

Typically, unless you’re facing a long journey with a large amount of luggage, it is safest to keep your tyres somewhere around the standard pressure mark.

What Does Bar / PSI Mean?

When you arrive at the petrol station to check your tyre pressure, you will notice that the machine invites you to set the optimum pressure in Bar or PSI.

Both translate to the same rating, and so it is personal preference which you use.

Bar derives from the metric system and is linked with the weather system – how we measure pressure in the atmosphere. 1 Bar is equal to 14.50 pounds or air per square inch.

PSI stands for Pounds per Square Inch and is an imperial measurement.

When used interchangeably, 1 Bar = 14.5 PSI.

How to Set Your Tyre Pressure

Once you’ve checked the sticker on the inside of your car door frame and have determined the right Bar or PSI rating for your vehicle, it’s time to check and adjust the pressure on your tyres.

To do this at a typical petrol station and self-service machine, add the correct amount of money to the machine then set your optimum Bar or PSI. Attach the nozzle to each tyre, with the machine reading and then adjusting the tyre pressure accordingly. 

If you find that the pressure on your tyres is dropping at an excessive rate, it could be that there is a slow puncture, and they need replacing. A full puncture will require the emergency wheel to be fitted temporarily, and a replacement tyre being sorted as soon as possible. 

Tyres.co.uk offer a wide range of tyres to suit all vehicles, with advice available online to help car owners choose the right brand and tyres for them.

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