Originally Posted by hbillsmith
Assuming that the like-size tire swap LT for ST involved an LT tire that has:
- the same or more plys (tread and wall)
- the same or better load rating at both 80psi and 110psi
- the same or better real world user reviews
What's wrong with that?
Sorry missed your question.
Some false equivalencies.
Number of "ply" is meaningless and I could have 10 ply of polyester that are not as strong as one ply of steel.
There are no LT tires of the same "size" as ST type tire that are rated for the same or higher load capacity with the same inflation.
Since it is the air pressure not the tire that supports the load the only valid comparison of two different size or different type is when tires have same inflation.
Within a type (only ST or only LT) you will see that increases in air volume due to wider of larger OD or increase in inflation result in increased load capacity.
The above are just physics and facts not opinion.
I write a blog on RV tire application and safety. RVTireSafety.NET
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Also give seminars on tires at RV events across the US. 40 years experience as tire design & quality engineer for major tire mfg. Freelander 23QB on Chevy chassis is my RV