Excessive weight transfer on most fire apparatus can contribute to which outcome?

• A. Skidding and Apparatus Rollover
• B. Improved Braking Performance
• C. Decreased Wind Resistance
• D. Reduced Steering Effort

Answer: (A)

Weight transfer during braking and turning shifts the vehicle’s load to different axles and sides. Fire apparatus often sit high with a tall center of gravity, so aggressive braking pushes weight toward the front axle and can lift or lighten the rear tires, increasing the chance of the rear tires losing traction and skidding. In a turn or quick maneuver, weight moves to the outside wheels, creating a larger tipping moment. If this dynamic load shift is large enough, the vehicle can roll over. That combination of loss of traction (skidding) and tipping tendency (rollover) is the main risk with excessive weight transfer on these trucks. The other outcomes aren’t produced by this effect: weight transfer doesn’t improve braking performance, reduce wind resistance, or reduce steering effort in a meaningful, reliable way for a high-CG fire apparatus.