Fleet mechanic performing a tire pressure check on a semi-truck using a handheld gauge to prevent increased rolling resistance and fuel waste
Even a minor drop in tire pressure increases rolling resistance, causing the engine to burn more fuel per kilometer.

How Tire Condition Impacts Fuel Consumption: A Fleet Manager’s Guide

Key Takeaways (TL;DR):

  • Direct Impact: Under-inflated tires increase rolling resistance, forcing the engine to burn more fuel.
  • The Cost: Incorrect tire pressure can increase fuel consumption by 5% to 10%.
  • Detection: If your Italon fuel sensor shows high consumption but no drains are detected, check the tires immediately.

Does the condition of your tires affect fuel consumption? Yes.
In our latest field report from September 2025, we explain why mechanical maintenance is just as critical as preventing theft for reducing fleet costs.

Andrey Romanov on Tire Condition & Consumption

What is Rolling Resistance?

As demonstrated in the video, fuel efficiency is directly linked to rolling resistance. This is the force resisting the motion when a tire rolls on a surface.

  • Low Pressure: Increases the contact patch with the road, creating more friction.
  • Worn Treads: Cause poor traction and energy loss.

When resistance is high, the engine requires more power (and diesel) to maintain speed.

Why Your Fuel Monitoring Data Might “Spike”

Fleet managers using Italon high-precision sensors often face a dilemma: the sensor data shows increased consumption, but there is no evidence of fuel theft.
In these cases, the sensor is accurately reporting a mechanical inefficiency. A truck running on under-inflated tires acts like a vehicle driving uphill constantly.

Checklist: How to Reduce Mechanical Fuel Loss

Mechanic checking tire pressure on a truck to improve fuel efficiency
Mechanic checking tire pressure on a truck to improve fuel efficiency

To optimize your fleet’s performance, follow these expert recommendations:

  1. Weekly Pressure Checks: Ensure tires are inflated to the manufacturer’s PSI rating. A drop of just 1 bar can significantly impact MPG (Miles Per Gallon).
  2. Inspect Tire Tread: Replace tires that show uneven wear patterns immediately.
  3. Analyze Sensor Data: Use your fuel monitoring reports identifying vehicles with consistently higher consumption on standard routes. This is usually the first sign of tire issues.

Frequently Asked Questions (FAQ)

Andrey Romanov, Commercial Director of ITALON, explaining the link between vehicle maintenance and fuel consumption in a truck workshop
“Often, what looks like fuel theft is actually mechanical inefficiency,” explains Andrey Romanov, Commercial Director at ITALON.

Q: How much does tire pressure affect fuel consumption?
A: Studies and field tests show that under-inflated tires can increase fuel consumption by roughly 0.2% for every 1 PSI drop in pressure. In severe cases with heavy trucks, this can lead to total fuel losses of up to 10%.

Q: Can worn-out tires cause high fuel consumption?
A: Yes. Worn-out tires or tires with incorrect alignment increase rolling resistance and reduce traction, causing the engine to work harder and burn more fuel.

Q: How can Italon sensors help reduce tire-related costs?
A: While Italon sensors measure fuel level, their high-precision data allows fleet managers to spot consumption anomalies. If fuel usage spikes without theft, it signals a mechanical issue like low tire pressure.