CapriRacer wrote:
JIMNLIN wrote:
No......each tire type/size/load range carries its own load rating.
Nor does it mean a ST 235/85-16 E load range at 3640 lb capacity tire test per the FMVSS test procedures is less stringent than a ST235/85-16 load F at 3960 lbs capacity. ......
But what about an LT235/85R16 Load Range E rated at 3085# at 80 psi, where an ST235/85R16 Load Range E is rated at 3640# at 80 psi? Isn't the equivalent ST tire being tested at a higher load than the LT?
Yeah.... just as it should be as the tire maker gives the ST a higher load rating.
The higher rated tire will always be subjected to a higher loads in the FMVSS testing regardless of tire type/size but IMO that doesn't mean the higher rated tire's testing procedures is more stringent.
However as SeniorGNC research finds tire strength tests show both ST and LT tire testing is identical.
The testing gap procedure differences between the ST and LT is endurance and high speed performance.