Get a pro trailer shop to check the axle for rolling accuracy. Especially if your rig is equipped with a dual torsion axle, check for even distance on the axle arm drops when the axles are off the ground by jacking the entire rig up with multiple jack stands on a completely level surface. The down angles of the individual down arms should not be out of spec otherwise the tires will not be loading equally from the internal rubber springs. Worn out torsion axles are certainly not a good thing if they put unequal loading on the tires.
If you have a spring setup then there are easy fixes for evening out the differences between loading while moving down the road at speed with inter axle connector units like this one.
https://www.etrailer.com/dept-pg-Tra...pt-Camper.aspx
Before one condemns a tire as being defective it is always a good idea to look at the running gear very carefully these days. IMO
All my best getting your rig into top condition for safer usage at highway speeds.
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