Quote:
Originally Posted by jadatis
Remarkeble is the enormous reserve of the axles( 2*4400lbs =8800lbs) to the GVWR of 4700 lbs
GVWR filled in in my made extra safe calculator, and maxload tires reduced by 6 Loadindex steps, gave only 37 psi.
The 4400lbs an axle gives 82 psi with max reserve without bumping.
But I daubt you ever using axles to the max if you dont overload the GVWR.
Lets rediculesly assume 4800lbs total weight, and zero lbs on the pin. And a division between the axles 1/2.
Then one axle 3200lbs and the other 1600lbs.
Far away from 4400lbs, even the highest loaded.
To make it complete also for the D-load tires
GVWR 4700 filled in 34.psi
GAWR 4400 x2 filed in 75psi, so 10 psi more then the reference pressure of 65 psi.
GAWR filled in and 2540 lbs a tire used, so no 6 LI steps lowered, 63 psi.
I give it both, because most dont apriciate my pigheaded system.
But my idea is that even with the old tires at 65psi some screws trembling loose.
And the enormous reserves of the axles, makes them stiffer, so lesser comfort.
Weighing is the only way to be shure
But my carefull opinion is that 80 psi is not needed, and even 65 psi is, if not higly overloaded, could give screws trembling loose.
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It's a rv, screws will loosen even when parked! Some of us have a few loose screws & dont have tires!
No one should be riding in the rv so who cares about the ride?
To OP! You've upgraded load capacity now inflate to use that capacity!