If a vehicle's tyres are under-inflated, does it result in less fuel consumption?

When tyres are under-inflated, they create more rolling resistance between the tyre and the road surface. This increased resistance means that the engine has to work harder to move the vehicle, leading to higher fuel consumption. Properly inflated tyres ensure optimal performance, improve fuel efficiency, and provide better handling and safety on the road.

While some might think that the effect could differ based on terrain or distance, the fundamental principle remains the same: lower tire pressure increases resistance, leading to higher fuel usage regardless of these factors. Thus, it is not true that under-inflated tyres result in less fuel consumption.