Tire pressure when loaded

[coolhl7]

how does loading a tire with water affect tire pressure requirements?
do you fill the remaining 20% not filled with water to the factory specs for air pressure or is there some adjustment due to the water? thanks.

 

[Bird]

do you fill the remaining 20% not filled with water to the factory specs for air pressure

Yes. Getting liquid in a regular tire gauge will greatly shorten its life, but you can buy air/liquid gauges that look about the same and cost about the same. And of course 75-80% liquid is the maximum you should use.

 

[DieselPower]

Yes, you fill the remaining portion of the tire to the normal tire preasure.

 

[Podunkadunk]

Dang...Bird and DieselPower jumped all over this one...if you guys could solve my tire PSI problem, I'd be much obliged.
Podunk

 

[dknarnd]

Can't remember where I saw this but I believe you reduce the air presure by 1/2 to 3/4 psi for every foot of liquid that is in the tire. So when measured from the ground up you have 3 feet of liquid in your tire then reduce the recommended tire pressure by 1 1/2 to 2 1/4 psi.

I will try to find this information again unless someone can confirm it.

 

[MDM]

My L2800 has loaded rears, and I am only running 8 psi in them. I believe the manual says 20 psi for empty rears. I started out at 20psi with them loaded, but they were just way too hard. I backed it down to about 10 and I still can't see any give in the sidewall when I raise a 500 lb box blade with the 3 pt hitch. I backed it down to 8 psi and that is where I could see a very, very slight give on the sidewall when I tried bouncing the box blade up and down. So, I'm leaving mine at 8 psi. It rides smoother and gets better traction (R4s). I think you need to back the pressure down once you put fluid in them. My dad is a lifetime farmer and that's what he told me, so I just figured he knew what he was talking about.