Loaded tires

cgarr

Member
Just put 2 new rears on my mf50

The tires are rated lets say for 2500 lbs if I put 400# of fluid in them is the rating only 2100# or is it still 2500# because of how the fluid weight is carried?

Thanks
Craig
 
(quoted from post at 09:47:24 09/03/21) Just put 2 new rears on my mf50

The tires are rated lets say for 2500 lbs if I put 400# of fluid in them is the rating only 2100# or is it still 2500# because of how the fluid weight is carried?

Thanks
Craig

2500 lbs. when properly inflated, with or without calcium. That's my understanding.
 

That calcium inside the tire is not resting on the wheel axles like the rest of the tractor is. It's more or less resting on the ground with the tire.
 
As I see it the weight is in the tire so it is that much more weight on the ground so it should be considered as part of the total tire weight supported by the tire. it has nothing to do with the weight on the axle.IMO
 
(quoted from post at 19:24:41 09/03/21) As I see it the weight is in the tire so it is that much more weight on the ground so it should be considered as part of the total tire weight supported by the tire. it has nothing to do with the weight on the axle.IMO

You don't get it. The tire is not holding that liquid weight up. It is resting on the ground. The weight of the machine is being transferred to the tires by the weight on the axles. That's the weight pressing down on the tires.

Think about it.
 
I'm sticking with my theory until proven wrong. The total weight of the axle load plus the weight of the tire and contents are pressing on the ground. That is what gives you more traction with loaded tires. If the tire isn't supporting the weight then I don't know what is. Guess we wil have to agree to disagree.
 
(quoted from post at 04:13:44 09/04/21) I'm sticking with my theory until proven wrong. The total weight of the axle load plus the weight of the tire and contents are pressing on the ground. That is what gives you more traction with loaded tires. If the tire isn't supporting the weight then I don't know what is. Guess we wil have to agree to disagree.

I look at it as the tire is containing the liquid ballast, just as it contains the air pressure inflating it. The tire rests on the ground and with the ballast inside the tire, the ballast is in effect resting on the ground in a container. Adding cast iron wheel weights would be supported weight, as they are not contacting the ground directly through the tire the same way as the liquid inside the tire. You adjust air pressure in the tire to compensate for the extra loading on the tire provided by the weights. A tractor with wheel weights will need more air pressure in it to have the same tire deflection as a tire with liquid ballast (no wheel weights). Instructions for ballasting with wheel weights mention needing to increase pressures due to the weights, I don't see that same verbiage with liquid ballast. I'm not saying liquid ballast has absolutely no affect but it is minimal. The difference is total tractor weight on the foot print of the tires includes the tires and any contents in them. True supported weight (rated load) doesn't include the tires and contents in them. My take on this, and yes we can agree to disagree, no problem.
 

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