Not clear. If the duallies have the brakes on only one wheel (AFAIK), then how can the braking stopping distance be different from a single rear wheel 1-ton? Rubber on the road more but only one braking.
A single 1-ton has less RGAWR than a dually, but if it has the same stopping distance, how can that be related to the "axle" weight rate ratings?
I'm using Fleet Ford specs....shows the F350 drw truck has a 1.50" diameter master cylinder vs a 1.315 diameter for the F250/F350 srw trucks.
And the F350 drw diesel uses the Dana 300 vs a Ford Sterling for the F350 srw.
Stopping distance ??
Fords brake system specs/axle system specs for vehicle brakes says nothing about required stopping distances.
Lots of variables in stopping distances between a fully loaded (full gawrs) one ton srw and drw.