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Retread Tire
Buyers Guide
Tires from A-Z
Tire Repair
The Importance of
Proper Tire Inflation
Understanding
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| Rolling Resistance |
Energy is consumed by overcoming aerodynamic drag, internal friction, rolling resistance and by accelerating and decelerating (braking). Internal rolling resistance is largely a function of truck design, and other than using low friction lubricants, there isn't much you can do to manage it. Rolling resistance is a mix of controllable and non- controllable factors. Tread design and tire carcass construction play a large role in rolling resistance, and they, too, are outside a driver's control. But air pressure is within your control, and you can check alignment. Tires flex when they roll and flexing absorbs energy. Air is a structural part of a tire. The more air that is in the tire, the stiffer it is and the less it will flex. Tires 20% psi low on air can lose more than 3 percent fuel economy. Tire alignment is important because if a tire is not rolling absolutely straight, it is being dragged sideways, and rubber is being rubbed off the tire. It takes energy to do that. The more the tires are out of line, the more energy is wasted.
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