Tyre Shopper strapline

What PSI should my tyres be?

What is PSI?

Pounds per square inch (PSI) refers to the air pressure within the inner lining of a tyre. This is also referred to as BAR pressure. Having the correct PSI is crucial to driving, as it helps the car drive as intended, as well as preventing excessive wear on the tyre.

How to find your correct PSI

You can find the correct air pressure for your tyres within your vehicle. This information is available within the vehicle's handbook, usually within the tyre's section. You can also find your PSI information inside the fuel cap, usually next to the specification of your tyres. You may also find the correct tyre pressure on the sill of the passenger door.

Alternatively, you can click the button below, and simply enter your registration number to find your tyre pressures.

PSI Search

How to inflate your tyres to the correct level

You can easily inflate your tyres at a petrol station. You can use the air pressure machine, which usually charges a small fee, to inflate your tyres. These machines have a built-in pressure monitor, to help you fill your tyres to the correct level. Simply follow the instruction on the air pump to inflate your tyres to the correct PSI.

You may also have a manual or electric pump at home or in the boot of your car. If you have to tyre attachment, you can use these to inflate your tyre. Ideally, these pumps will have a built-in pressure monitor, but if not then you can use a tyre pressure gauge. To find out how to use a pressure gauge, click the link below.

Pressure Gauge

How to deflate your tyres to the correct level

If you have overinflated your tyres, you can easily use this method to let some air out and return them to the correct PSI. Firstly, remove the valve cap on your tyre. Then, use a flat-head screwdriver and push down on the top of the metal pin within the tyre valve. This should begin to release air from the tyre. After releasing a small amount of air, remove the screwdriver and use a tyre gauge to check if your PSI is at the correct level.

If the tyre is still overinflated, simply repeat the above process until your air pressure is at the correct level.

Importance of having the correct tyre pressure

Having the correct PSI can help extend your tyres life, as well as keep you safe on the road. These are the three key benefits of having the correct tyre pressure.

Fuel efficiency

Having the correct PSI will help you get more miles out of your fuel. This is due to under-inflation causing more friction between the tyre and road surface, which in turn has a negative impact on rolling resistance. This leads to the vehicle using more fuel in order to begin moving, which can have a major impact on your efficiency.

Excessive tyre wear

If a tyre is underinflated, then more surface area will be in contact with the road. This can lead to excessive wear across the tyre, and therefore the tyre will need replacing quicker than usual. Tyres can also wear quicker when overinflated, as the tyres will bounce along the road surface, causing uneven spots of wear.

Punctures and blowouts

If the Psi is incorrect, the tyre wall may become weak. This can be caused by cracks in the tyre due to an unnatural shape, due to less or more air within the tyre. This can compromise the tyre, due to the internal temperature becoming higher, therefore making the tyre more susceptible to punctures and blowouts.

Order Tyres Online

All of our tyres are fitted to the correct PSI for your vehicle. To purchase new tyres from Tyre Shopper, click the button below.

Buy Tyres

Ben Garner

Did you enjoy this blog post? |

Search by TYRE SIZE

Visa, Mastercard,Maestro, PayPal, RBS Worldpay, Thawte.
Tyre Information
Cookies Settings

© Tyre Shopper 2024. All rights reserved
VAT Registration Number: 797 0776 69

Retailer of Low Cost tyres, available for fitting by over 1,000+ specialists, across the United Kingdom.
Ready to buy? Choose from our best selling car tyres by manufacturer.