Why 'minus' matters
The word minus means the material contains everything from the top size down to dust. Those fines are the binder. Wash them out — as happens with river rock or clean-graded stone — and you get a surface that scatters under tires and migrates into the grass.
If you want a decorative loose-stone look, that is a different product and a different conversation. For a driving surface, you want minus.


