Originally Posted by joseph lamb
So , I have a question .
2000 minnie winnie 22 foot motor home , with 4 Americus Commercial Chinese
Tires mounted and balanced 36 montha ago , with 4000 miles on them .
8500 lb motor home with Dans 70 rear end .
Running 65 pounds of air pressure since installed and two of the tires today are running out of round big time . Rattled my teeth all the way home >
Just started this am on trip back to Tampa .
Looks like junk tires to me . What causes this problem to appear >??
Anyone got their two cents ????????I am going to New Mexico soon .
Joe in Tampa
Sorry just not enough data. Tires do not fail due to average loading. You really need to know the actual load on each tire or at least on each axle. If you can't get individual tire loads then assume your motorhome axle is unbalanced at 47/53%
65 psi may or may not be enough air. It depends on tire size, type and the load on that tire.
If your tires have gone "out of round" there is a good chance they are in the process of separating. Get them inspected AT once. This does not mean a walk around the Rv and look at dread depth but measure Radial run-out and lateral run-out.
Read my post on tire inspection
How often have you checked air pressure? Have you ever been low by more than 5 psi? Have you confirmed your pressure gauge is accurate to +/- 2 psi or less?
Why aren't you running a TPMS?