Low-Mileage Tire Tread Separation on 2025 Winnebago Spirit

[Tim.D]

No air leveling, just two air bags in the rear. Each have a single line run underneath to its individual bag. I was able to spray some soapy water on the fill valves and NO bubbles. Im going to have to climb underneath to get to the entry point of the line into the bag and check next.

 

[klook]

Should not be leaking on a new unit, mine was but it was the the 22 year old schrader valves.....

 

[wahoonc]

The rear tires had 74psi cold 80 hot, the front 80psi cold and 85 hot with running on the road after about 20 min when it blew apart. They were not under inflated or overloaded. I ran a CAT scale check and am at 13632. GCVW is 14500.

The spare had a hole in it and had to have it patched at the tire shop when they replaced the blowout.. It lost the 75psi I put in it within 36hrs. How a hole got there IDK?

I stabbed the sidewall with a kitchen knife blade to ensure it did NOT explode when I put it inside to get home.

Tires are Hankook Dynapro ht 225/75/16 front say 80psi cold and rear say 75psi cold but all are the same as far as I can tell just stamped differently.

Another, Why do the airbags loose 1/2 the pressure I put in overnight? I pump up to 60 and they drop to 30-40lbs overnight.

If the pressures are different on the sidewalls you may have different load ratings, I would read them and see what it says.

As far as the airbags, they are notorious for having a leakey fittings. There isn't much to the system; the valves a piece of hose and the airbag itself. Air them up and spray down the fittings with soapy water. I had a valve stem that was bad in the ones I had.

Aaron