Beach-Rat wrote:
ST Weight Ratings..
There is more to it.. I don't know what or how but I do know that there is more..
Reason.. I just put the third set of ST tires on in six years.. OE were "Ds".. last set & the new set are "Es". All of the OE tires and three of the four past set of "Es" failed due to belt seperation (goose eggs) the fourth "E" is in small pieces on I-295 so I don't know why it failed. The last OE was kept as a spare and it seperated while hanging under the trailer as a spare.
And while the tires/wheels are being worked on the trailer is sitting on two 225/75-R15 "C" Marathons (made in the USA Marathons) The "Cs" were replaced due to age at 7 years (1996 build date) and 20k miles. They are now mounted on Toyota pick-up wheels (yes, the offset is wrong, way wrong) and they show no signs of coming apart
So.. why does every ST tire that I touch come apart in 2 1/2 to 3 years at less than 15k and the old 1996 "C" Marathons just hang in there.
To try to understand so I can answer your question: When you changed to the Load Range E tires - Did you increase the inflation pressure to 80 psi? If not, then you didn't actually change to Load Range E tires. You changed to "Load Range E tires running at Load Range D conditions" - essentailly running a Load Range D tire.
