How does tire pressure affect fuel efficiency?

How does tire pressure affect fuel efficiency?

Tire pressure plays a significant role in determining the fuel efficiency of a vehicle. When the tires are properly inflated, it reduces rolling resistance, which is the force required to move the vehicle forward. Higher rolling resistance requires the engine to work harder, resulting in increased fuel consumption.

On the other hand, when the tire pressure is lower than recommended, the rolling resistance increases. Underinflated tires have a larger contact patch with the road, making the sidewalls flex more as the vehicle moves. This flexing creates additional friction and resistance, causing the engine to consume more fuel to maintain the same speed.

Moreover, incorrect tire pressure can also lead to unequal tread wear and decreased tire lifespan. This further affects fuel efficiency as worn-out tires create more resistance and require an even greater amount of power from the engine to move the vehicle.

By regularly checking and maintaining the tire pressure within the recommended range provided by the vehicle manufacturer, drivers can optimize fuel efficiency. It is advisable to consult the owner's manual or the sticker located on the driver's side doorjamb for the correct tire pressure specifications for the vehicle.