Folks..springs all have their positives and negatives...it is just how/where/etc they are designed into whatever
Springs...that includes the tires...as tires have that and many other duties...comes in many different forms
Leaf springs have more but not better attributes for automotive. Coil, air, etc all need additional...locational components. Like a panhard rod for side to side locational duties...links for side to side & forward/revers locational duties
Leaf springs can do all that locational duties and also carry a load...
As with anything, they can do the job...as long as they are designed in correctly
Here are the types of air bags I've designed into industrial stuff back in the 80's...
Firestone Industrial Air SpringsThe curves might be of interest, as they correlate with automotive air springs too...just in a much smaller zone. Why air springs can have a much softer ride...while carrying similar to higher loads vs leaf springs
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