I went and pulled the numbers from when I took my truck and trailer to the scales and this is what they were.
Truck hooked up with the weight distribution bars engaged.
Steer Axle - 3320, Drive Axle - 3700, Trailer Axle 5,860, Gross Weight 12,880
Truck hooked up with no weight distribution bars
Steer Axle - 3120, Drive Axle - 3,920, Trailer Axle 5,820, Gross weight 12,860
Steer Axle -3460, Drive Axle - 2,680, Gross weight 6,140
It appears that 40 lbs went to the axles of the trailer. With a tongue weight of 900 lbs that would equate to 4.4 percent. Hope this helps.
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