1212Based on the following figures, how much fuel can you legally add while remaining legal on the drive axles?
Percentage of fuel weight to drive axles: 30%
Weight Before Fueling: Steer: 11,275, drives: 33,750, gross: 77,220

1212Once you know your current axle weights and the percentage of fuel weight that goes on the drive axles, you can use this formula to calculate the amount of fuel you can take on:

We know that 30% of the weight of fuel will go to the drive axles and you have 250 pounds you can add to the weight of the drive axles and remain legal. So plugging these numbers into the formula, you get:
250/30 = 8.33
8.33x100 = 833
833/8 = 104.13 gallons of fuel you can add