Quote:
Originally Posted by hamm2018
Question for tireman We have a 2018 Road Warrior it is a triaxle and weighs out at 21950. During our national rally on June 5,2019 I had it weighed. It was weighed for each wheel, not on a cat scale. Each axle was under the 7000 lb rating. So I run my tires at 95% of the 110psi on the sidewall. I also go with the thought of having room to expand. In your opinion would it be beneficial to increase psi to max 110 psi.
Been rving for 17 years, no tire issues. But this coming Friday we will become houseless and fulltimers.
Keep in mind I am hardheaded and hard to convince to change my past practices!!��
If I can find my weigh sheet I will if I can post it.
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So no tire has more than 3500# load on it and the load / infl tables indicate you only need 105psi in your tires to support the heaviest end of each axle?
I suggest that if possible people set the cold inflation to 110% of the MINIMUM inflation needed to support the load. This eliminates the need to be constantly playing with inflation when the temperature drops or pressure drops over time.
Trailers, because of the unique and high belt forces "Interply Shear" need to run a higher inflation to try and offset these higher shear forces so their "Cold" set pressure should be the tire sidewall pressure but they need to adjust (lower) their RV load to ensure the load is no greater on any one tire than 85% of the load indicated in the tables.
The practice of starting out at a lower pressure and plan on the tire temperature increase and subsiquent pressure increase is simply bad policy and is not supported by any tire engineer or tire company information I have ever seen or heard of.