Driving with the correct tyre pressure is essential to ensure optimal performance of a truck or trailer tyre. In addition, extremely low or high tyre pressure can create dangerous situations. But what exactly is the correct tyre pressure? And what other factors should you pay attention to?
Tire manufacturers provide clear guidelines on the correct tire pressure. It is important to follow these guidelines, as this offers the following benefits:
A truck tire generally has a tire pressure of 8–9 bar. Many tire manufacturers indicate the correct/ideal tire pressure on the sidewall of the tire, which is the side of the tire. This also shows the tire size, load and speed index, and other tire information. More information on how to read a truck tire can be found in our article “How to read a truck tire”.
If you are looking for personal advice on which tire pressure to use, we are happy to help!
The danger of low tire pressure, also known as underinflation, is an increased risk of a blowout. In general, a truck tire requires around 8 to 9 bar of air pressure. The lower the tire pressure, the faster the tire heats up and the greater the chance it will burst.
Low tire pressure also increases rolling resistance, which has a significant impact on the truck’s fuel consumption. Michelin states that 1.5 bar too little pressure results in a 10% performance loss. Continental and Barum have calculated that using the correct tire pressure can result in annual savings of €1,500* per vehicle.
*Savings by Continental are based on a 4x2 tractor unit with a three-axle trailer covering 150,000 km.
So, should you inflate them extra? No, that also creates unsafe situations. Excessively high tire pressure, also known as overinflation, increases the risk of a blowout as well. In addition, the tire will bulge, reducing traction and causing uneven tread wear.
Research shows that overinflation of 20% can reduce a tire’s lifespan by up to 30%. This leads not only to higher costs for new tires but also to more vehicle downtime.
In addition to using the correct tire pressure, it is very important to check the tires regularly. Not only for visible imperfections, but the air pressure must also be measured, as every tire gradually loses pressure over time.
Experts recommend checking tire pressure at least once a week and before every long trip. If you have a tire pressure monitoring system (TPMS), you can continuously monitor the pressure.
First, check for visible cracks or other visual damage on the tire. The outer sides of the tires are particularly sensitive to this. Then always check the tread depth and see whether the tire shows uneven wear on one side.
For a professional inspection, you can always visit one of our BAS Parts service locations. Our specialists can perform a full tire check and advise you on any potential issues.
Tire pressure has a major impact on tire performance. Especially for trucks, tires are extremely important. A truck tire that is 1.5 bar below the recommended pressure will consume 1% more fuel.
In addition, regularly checking tire pressure is an important safety measure. A blowout on the highway can not only cause damage to your vehicle but also create dangerous situations for other road users.
