Tire Ballast

[weehawl]

Thinking about adding antifreeze to rear tires on my L3200 Kubota. Rear tire size is 27x8.5-15 R4. I have the equipment to fill the tires but would like to know about how much water volume is required. If anyone can pass along a formula to calculate the water volume it would be appreciated. Thanks

 

[boggen]

Thinking about adding antifreeze to rear tires on my L3200 Kubota. Rear tire size is 27x8.5-15 R4. I have the equipment to fill the tires but would like to know about how much water volume is required. If anyone can pass along a formula to calculate the water volume it would be appreciated. Thanks

diameter / 2 = radius

radius x radius x 3.14 = square area

square area x height = cubic volume.

cubic inches / 12 / 12 /12 = cubic feet

cubic feet x 7.48 = liquid gallons. (conversion between feet to gallons)

other words...

27 / 2 = 13.5 radius

13.5 x 13.5 x 3.14 = 572.265 square inches

572.265 x 8.5 = 4864.2525 cubic inches

4864.2525 / 12 / 12 / 12 = 2.8149609375 cubic feet

2.8149609375 * 7.48 = 21.0559078125 gallons

above does not take into account area of rim. that you would need to subtract from 21 gallons. but same math as above to figure out rim space.

i am sure there is a better formula to figure out "donut" shape. but above will give you a rough estimate.

 

[Gary Fowler]

Our just Google - Tire size water capacity and it is already figured for you.

 

[fenix]

You may want to look at RV antifreeze or windshield cleaner
for your tires. Both are less toxic then regular antifreeze and
less expensive. The tire size has me puzzled as I looked on line
and found this scale. I may be missing something, but by this
scale the tire will not hold that much.
www.tractorsmart.com/Farm_Tractor_​Liquid_Tire_Ballast.htm

 

[weehawl]

Thanks guys for the info. Will get started asap.

 

[crazyal]

A simple call to your local tractor dealer will answer your question. When asked about Rim Guard every dealer told me how much the tire would hold, the weight, and the cost. Keep in mind Rim Guard weighs more but the volume would be the same.

 

[Gary Fowler]

I couldnt find that tire size on any charts so I calculated it by extrapolation of cylinder volume based on 27" OD x 8.5" high minus a 15" x 8.5 cylinder and came up with 12 gal. capacity @ 75% fill = 9 gallons of liquid capacity for this tire. That figure may be a little high.

 

[Reg]

Thinking about adding antifreeze to rear tires on my L3200 Kubota. Rear tire size is 27x8.5-15 R4. I have the equipment to fill the tires but would like to know about how much water volume is required. If anyone can pass along a formula to calculate the water volume it would be appreciated. Thanks

FirestoneAg and GoodyearAg web sites have tire capacity tables for this.
Not sure if they go down to such a small tire - they may consider it too small to be worth filling ...and they may be right about that (-:

I went for RimGuard in my little tractor, with 17.5Kx24 R4s.
It came to a little over 100 gallons for the pair and that made a BIG difference to a tractor that was previously only about 5,300 lbs with it's loader.
It didn't make it a Cat 3 or Cat 2 tractor by any means - maybe Cat 1.4 (-:

 

[SSdoxie]

Here is what chart on Balastar.com show.

Tire Size Gallons of Liquid Calcium. Weight (lbs.)

27x8.50 - 15 7 74.9

 

[fenix]

Try this link. If it does not go to the site , copy and paste it.
By this scale the numbers Gary came up with are about the
same, at 75% full which is what most call for.
And as he said his may be little high.

http://www.tractorsmart.com/Farm_Tra...re_Ballast.htm