Tire pressure

37chief · Aug 20, 2013

I am mowing in a hilly sandy area. Seams like every hill I come to the tires want to spin. I want to lower the tire pressure to get a little more traction. What is the minimum pressure I can run without spinning the tire on the rim? The tires don't have water in them. The tires are on my JD 401 industrial with my 7 1/2ft flail mower. The tire size is 16.9 x 24 Thanks Stan

Super Trucker · Aug 20, 2013

I've seen 4psi but I thought that to be a little crazy. I run about 8psi in most of the rear tires I have.

Brent Zappe · Aug 20, 2013

One question you need to ask what type of tires do you have on the back. Are they the Truff tires or the Ag. farm tractor tire? If you can take a look at your tractor tire make sure that there not twisting when useing them. Low pressure is good but being a flat tire means more work on the tractor.

farmallstrong · Aug 20, 2013

We pull a Farmall BN with 16.9x24 firestones. We run 4# of air in them. They do real well.

showcrop · Aug 20, 2013

Lower pressure won't help you a bit in sand, it is not like a hard dirt surface or like dragster tires on pavement. I drop my 15.5s on my 3500# puller down to 6 lbs. for a hard sticky track but for a soft track they go back up to 9-12 so that they have a full profile and will dig all the way across.

Anonymous-0 · Aug 20, 2013

You're not comparing apples to apples. It is common
in sand to lower tire pressure for a wider foot
print. It's not about pulling since pulling
anything, you'd most likely just dig a hole in sand.
Same as putting duals on a tractor, lower ground
pressure for soft spots.

showcrop · Aug 20, 2013

(quoted from post at 17:03:12 08/20/13) You're not comparing apples to apples. It is common
in sand to lower tire pressure for a wider foot
print. It's not about pulling since pulling
anything, you'd most likely just dig a hole in sand.
Same as putting duals on a tractor, lower ground
pressure for soft spots.

Well stick, I don't think that you are comparing apples to apples either, unless Chief has flotation tires on that Deere. Flotation tires work at far lower pressure than conventional traction lug tractor tires, and they flex in order to conform to the surface. If you get tractor tires too soft the tire is pulling only on the edges and the middle will be pressed up in and not holding any weight or helping with traction. You want adequate pressure to hold the middle down so that your tire is pushing evenly all the way across.

rustred · Aug 21, 2013

just to answer your question, you will not spin the tires on the rim with even 4 lbs of pressure in them as you are just pulling a mower.

Tire pressure

37chief

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Super Trucker

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Brent Zappe

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farmallstrong

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showcrop

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Anonymous-0

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showcrop

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rustred

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