Which would have better overall performance???

[Dan Swanson]

This on an IH 856, I have 15.5 bias with no weights or ballast and a set of clamp on 15.5 duals. I also have a set of 2 - 16.9 GoodYear Radials with at least 75% tread left. What would be a better overall combination when used in a field work situation, say pulling a 24" spring tooth in plowed ground. The 15.5s with 75%ballast and just air in the duals or the single 16.9 x 38 GY radials with 75% ballast. I know there is more tire on the ground with the dualled 15.5s but am I right in thinking the radial could actually have more compaction but better grip because of being a radial?

Thanks Dan

 

[Anonymous-0]

Dan, I think you have to go with the duals, especially in plowed ground, even if not weighted you have way more float and surface contact than any single radial or not.

 

[Allan in NE]

You think it will even pull it Dan? Don't think ya have enough horse for a 24' spring tooth in plowed ground, do ya?

Dunno,

Allan

 

[Anonymous-0]

You must be pretty limited with single 15.5's on an 856.

The others have answered your question well.


Glenn

 

[Dan Swanson]

First of all I'm located in western Nebraska with fairly light soil. Years ago my grand dad used a JD 4030 (the 856 is very close to the same HP) with 15.5 singles and ballast to pull the same 24' two row Crustbuster I have now in plowed ground. The first time over is the toughest and once that's done then it pulls a lot easier. But with the price of fuel the need for economy starts to play a big part.

That said I'll probable stay with the 15.5s.

Thanks for the great help! I've been around farming all my life, parents and inlaws still farm. Starting at 7 years old I spent many years running a GB MM LPgas 60HP, 5 bottom 14" plows, 21 foot drag spring tooths, life was good. But man have equipment and things changed since.

Thanks, Dan

 

[Anonymous-0]

I have never seen an 856 with 15.5x38's.They were all sold new in my area with 18.4x38's and most were dualed.

 

[Anonymous-0]

Go with the duals if for no other reason than the ride.

 

[Anonymous-0]

According to this link, liquid ballast in a radial stiffens the sideway and just makes it act like a bias ply and is detrimental to performance.
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