Heavy Truck Talk

truck science made easy

Grade resistance is the rearward acting force component of the vehicle weight on a grade. It is the amount of force required to overcome gravity, and is given as .01 times the gross weight times the percentage grade, with units of pound force.

Some 13% of the power produced by the engine to move a long haul rig along a smooth road at 65 mph is “lost” due to Rolling Resistance. What is it, what causes it, and how can you help to reduce it.


The findings of the survey were a little surprising, with a few bits of what could even be called contradictory findings.

TMC Survey Reveals Misinformed View of Fuel-Efficient Tires

From the equipment you spec and maintain, to the fuel you buy, to driver training and incentives, you’ll find tips for nearly any type of fleet.

121 Ways to Save Fuel: Tires