Helper Springs on Truck Question

[Rara Avis]

"Overload and stabilizing leaf springs are SuperSprings, better than air bags."

 

[Renze]

"Overload and stabilizing leaf springs are SuperSprings, better than air bags."

They might be better on light trucks that ride smooth with no load, to carry extra weight.
To give a HD vehicle with hard springs a smooth ride, the airbag is still better.

Best is off course a full airbag set with automatic height adjustment.