Tire inflation is an element that should not be underestimated in car maintenance. Driving with under-inflated tires increases the chances of having a road accident, but it also means overconsuming fuel in a period when prices are high, as well as running the risk of having to pay. a fine in the event of control by the police. In addition, a tire that is under pressure wears out more quickly and will need to be changed more often than regularly inflated tires. This is more than enough reason to regularly take an interest in the state of tire inflation.

The first reflex to have is to consult the user manual of your vehicle, which indicates how much the rear tires and those of the front must be inflated. However, the indications in the manuals concerning the inflation of the tires are given for cold tires, i.e., tires that have not been driven for two hours or which have driven 3 km at a reduced speed, while very often our tires are hot. To be in optimal conditions, the driver must add 0.3 bar of pressure compared to the indications in the manual: so if the recommended pressure for your vehicle is 2.1 bar for cold tires, you can actually go up to 2.4 bar. Moreover, if you check the inflation of the tires while they are hot and you find a value greater than 2.4 to use the previous example, do not deflate hot tires, it’s bad. Note that tire brands do not change the pressure for your car.

You Should Also Know That Inflation May Vary Depending On Different Reasons:

  • +0.3 bar if you have to take the motorway for more than two hours.
  • +0.4 bar or even more (see the vehicle manual) if your car tows a trailer or a caravan.
  • +0.2 bar compared to the current pressure in winter due to low temperatures.

Do Not Over-Inflate The Tires.

Faced with the regular and natural deflation of the tires, one might be tempted to over-inflate the tires. Be careful, this reduces the contact surface with the ground and stiffens the sidewalls: the handling of the vehicle, its comfort, the wear of the tires are all modified.

Don’t Forget To Check The Pressure Of The Spare Tire.

The spare wheel is not always accessible. When possible, and when servicing the vehicle, check the pressure of the spare tire. Its pressure should be equal to the highest pressure recommended for the front and rear tires of the vehicle, increased by 0.3 bar.

Make Sure There Are Valve Caps On All The Wheels.

The valve cap is an essential sealing element. It protects the inside of the valve from damage caused by dirt and thus makes it easier to re-inflate the tires.

For A Tire Inflated With Nitrogen, Follow The Same Rules As With Air.

The gum mixes are slightly tighter with respect to nitrogen than to air. A tire inflated with nitrogen deflates more slowly but also requires regular monitoring. The rules and advice are given for inflating tires with air all apply.