Correct tyre inflation pressure is essential for safety, optimum tyre life, fuel efficiency, and will reduce CO2 emissions too.
Check tyre pressures (including the spare tyre) using an accurate gauge at least monthly, and before a long trip. Correct the tyre pressures if they do not correspond to the vehicle manufacturers recommended level for the conditions of use.
Ideally check pressures when the tyres are "cold"; this means that they have not been used in the last 2 hours, or have covered less than 2 miles at low speeds. Any tyre not in this "cold" condition is considered "hot". If the tyres are "hot" use a pressure 4 to 5 psi (0.3 bar) higher than those recommended by the vehicle manufacturer. Do no deflate a "hot" tyre, even if the pressure is above the recommended level.
Tyres gradually lose air inflation pressure naturally; hence the need to check and adjust them regularly. This regular check can also make you aware of any abnormal loss of pressure caused by things such as:
Tyres should always be used with the correct pressure, as under inflation may cause irreversible damage to the tyres internal components and could eventually lead to a rapid deflation.
Inflation with nitrogen does not dispense with the need to frequently check tyre pressures.
If you are unsure about how to check your tyre pressures, ask your local tyre specialist for assistance.
Why should your tyres have the correct inflation pressure?
Because you will…