Tyres Tyre Information Tyre Pressure

Tyre Pressure

Maintaining the correct tyre pressure will help to extend the life of your tyres, improve vehicle safety and maintain fuel efficiency.

Tyre pressure is measured by calculating the amount of air that has been pumped into the inner lining of your tyre in pounds per square inch (PSI) or BAR pressure.

The manufacturer of your vehicle will specify the suitable pressure for your tyres, and it is your responsibility as the driver to make sure that the pressure is checked and corrected on a regular basis. We recommend doing this every two weeks to ensure optimum tyre pressure.

Correct Tyre Inflation
Correct Inflation
Under inflation
Under inflation
Over inflation
Over Inflation

Under inflated tyres

Tyres can quickly become underinflated if you don’t check them regularly. Under inflated tyres will have uneven contact with the road and will exhibit excessive wear on the inside and outside edges of the tread if they are left underinflated for some time. Not only does low tyre pressure wear your tyres out more quickly but you may also experience increased rolling resistance with the road which means reduced fuel efficiency and increased CO2 emissions.

Over inflated tyres

Putting too much air in your tyres can be just as damaging and costly. Over inflated tyres will have a smaller contact patch – the part of the tyre that makes contact with the road - which can lead to a loss of traction and poorer braking distances. Overinflated tyres will also wear heavily and unevenly across the central part of the tyre leading to shorter tyre lifespans than if the tyre was correctly inflated.

Correct tyre pressures

It's not always apparent that air is being lost from your tyres, but it generally escapes at the rate of up to two PSI of air every month. More air is usually lost during warm weather, so more regular checks are needed when temperatures rise.

You can find the recommended tyre pressure for your vehicle in your vehicle handbook or printed either in the sill of the driver’s door or on the inside of the fuel tank flap. Your vehicle manufacturer may suggest different tyre pressures for your front and rear tyres so make sure you aware of these guidelines. Alternatively use our tyre pressure finder.

Always check the tyre pressure with a tyre pressure gauge when your tyres are cold. Finally, if you are using your vehicle to carry additional load or weight, always consult your vehicle handbook for the correct loaded tyre pressure.

Tyre Pressure Measurement Converter

Convert a bar pressure measurement into a psi pressure measurement and vice versa using our tyre pressure converter.

1.30 bar 17 psi 1.90 bar 27 psi 2.60 bar 37 psi 3.25 bar 47 psi 3.95 bar 57 psi
1.35 bar 18 psi 1.95 bar 28 psi 2.65 bar 38 psi 3.30 bar 48 psi 4.00 bar 58 psi
1.40 bar 19 psi 2.00 bar 29 psi 2.70 bar 39 psi 3.40 bar 49 psi 4.10 bar 59 psi
1.45 bar 20 psi 2.10 bar 30 psi 2.75 bar 40 psi 3.50 bar 50 psi 4.15 bar 60 psi
1.50 bar 21 psi 2.15 bar 31 psi 2.80 bar 41 psi 3.55 bar 51 psi 4.50 bar 65 psi
1.55 bar 22 psi 2.20 bar 32 psi 2.90 bar 42 psi 3.60 bar 52 psi 4.80 bar 70 psi
1.60 bar 23 psi 2.25 bar 33 psi 3.00 bar 43 psi 3.70 bar 53 psi 5.20 bar 75 psi
1.70 bar 24 psi 2.30 bar 34 psi 3.05 bar 44 psi 3.75 bar 54 psi 5.50 bar 80 psi
1.75 bar 25 psi 2.40 bar 35 psi 3.10 bar 45 psi 3.80 bar 55 psi 5.85 bar 85 psi
1.80 bar 26 psi 2.50 bar 36 psi 3.20 bar 46 psi 3.90 bar 56 psi 6.20 bar 90 psi
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