The Right Semi-Truck Tire Pressure

March 14, 20240

Proper tire pressure is critically important for safe operation of commercial vehicles. Knowledge about the correct semi tire pressure helps truck drivers and fleet managers save on fuel costs, prevent premature tire wear, and avoid tire blowouts during trips.

What Is the Correct PSI for Semi Truck Tires?

The correct semi-truck tire pressure depends on many factors:

The weight of the cargo being transported
Tire size
Weather conditions
Manufacturer’s recommendations

However, most semi-trailer tires are recommended to be inflated to between 100 and 110 PSI.

Truck Weighing

To determine the correct pressure, the truck should be weighed on weighing equipment: each axle separately, as well as the complete trailer.

Then you need to compare the resulting total weight of each axle with the tire manufacturer’s recommendations. Particular attention should be paid to the weight that falls on each front axle tire.

If the maximum load capacity of a tire is less than the weight shown on the scale, you must select tires with a higher load capacity.

This can be achieved by using tires with a higher load index, increasing the load range, or by using larger tires.

Adjustments for Load and Temperature

It is important to adjust semi tire pressure depending on the load carried and the ambient temperature.

Heavier loads may require higher tire pressure, and adjustments may also be needed when driving in conditions of extremely high or low temperature.

Importance of Regular Semi Tire Pressure Checks

Ideally, tire pressure should be checked before each trip.

Tires can lose up to 2 pounds per square inch (PSI) per month due to natural air leakage, and temperature changes can also affect the pressure inside the tire.

For accurate measurements and air adjustments, drivers are advised to always have a pressure gauge with them.