Tires M7060 & rear wheel offsets

[TexasBoy]

I have a question for you guys who have a M7060 and changed the rear wheels to get the tires further out:

My new M7060 arrived and I ordered cast wheels and a set of wheel weights. Someone had posted a picture of their M7060 with the outer wheel/tire moved to the outside of the cast center and that was what I was intending on doing with mine:





However, now that the machine is here from the factory, if you look at those ears that mount the inner to the outer wheels, it has a raised boss where the carriage bolt heads go into and that side of the ear isnt completely flat. If a person was to do the setup in the picture above, the ear that the bolts go to, would not be completely flat against the inner wheel. (I know this isnt easy to convey without more pictures) You guys who have cast centers and moved your tires out, how did you go about it and get it done?

Thanks in advance for your input.

 

[oosik]

My 2009 Kubota M6040 has Ag rims. This means there are eight different offsets. It's hard to believe that there isn't SOME way to get the same with cast wheels.

BTW - I know exactly what you are speaking about regarding the offsets.

I think it's time to have a discussion with the service manager at the dealership.

 

[sixdogs]

I'm not exactly sure what you mean but you can switch the rims from one side to the other, as well as reversed, to make it wider. The owner's manual has a sketch of each position.

 

[oosik]

My owners manual has drawings of the eight positions. I will attempt to verbalize these positions.
Position #1 - center dished out - tabs on center in the inner position - tabs on rim in the inner portion
Position #2 - center dished out - tabs on center in the inner position - tabs on rim in the outer position
Position #3 - center dished out - tabs on center in the outer position - tabs on rim in the inner position
Position #4 - center dished out - tabs on center in the outer position - tabs on rim in the outer position
Position #5 - center dished in - tabs on center in the inner position - tabs on rim in the inner position
Position #6 - center dished in - tabs on center in the inner position - tabs on rim in the outer position
Position #7 - center dished in - tabs on center in the outer position - tabs on rim in the inner position
Position #8 - center dished in - tabs on center in the outer position - tabs on rim in the outer position.

It's all about row crop farming. My rear tires are currently set in Position #3. Next to the widest setting... Position #4 being the very widest setting. Position #5 being the very narrowest setting. All these eight setting are available on the front tires also. My front tires are currently in Position #6. About as close to a "neutral" setting as possible.

 

[TexasBoy]

I'm not exactly sure what you mean but you can switch the rims from one side to the other, as well as reversed, to make it wider. The owner's manual has a sketch of each position.

I looked on page 62 and it only shows the steel wheel, not the cast center.



I will post better pictures later, need to go by the dealership.

 

[sixdogs]

My owners manual has drawings of the eight positions. I will attempt to verbalize these positions.
Position #1 - center dished out - tabs on center in the inner position - tabs on rim in the inner portion
Position #2 - center dished out - tabs on center in the inner position - tabs on rim in the outer position
Position #3 - center dished out - tabs on center in the outer position - tabs on rim in the inner position
Position #4 - center dished out - tabs on center in the outer position - tabs on rim in the outer position
Position #5 - center dished in - tabs on center in the inner position - tabs on rim in the inner position
Position #6 - center dished in - tabs on center in the inner position - tabs on rim in the outer position
Position #7 - center dished in - tabs on center in the outer position - tabs on rim in the inner position
Position #8 - center dished in - tabs on center in the outer position - tabs on rim in the outer position.

It's all about row crop farming. My rear tires are currently set in Position #3. Next to the widest setting... Position #4 being the very widest setting. Position #5 being the very narrowest setting. All these eight setting are available on the front tires also. My front tires are currently in Position #6. About as close to a "neutral" setting as possible.

I have one M7040--same as M7060--set up for crops on a 30" row center. Outer wheels are one notch off narrowest for a 60" tread center and front is set so the inside edge of the tire matches the inside edge of the rear tire. I think I have the Kubota owner's manual that mentions cast centers and I'll look for it.

 

[oosik]

Yes, TexasBoy. That's the picture in my Op Manual. The rest of the picture is with the centers dished inward - making the last four positions.

I just checked - for whatever reason, my M6040 Op Manual is silent regarding cast centers. It does say you can add up to 320# per rear wheel with wheel weights.

It could well be, I guess, that cast centers simply do not offer the offset positions.

 

[TexasBoy]

Heres how they handle the cast centers: consult the dealer.

 

[oosik]

As I look closely at the pic you posted TB - that appears to be in about the most "outward" position possible. The centers are dished out - the rim tabs are in the inward position( making more of the rim stick out) and the rim tabs are attached to the outside of the cast centers. I don't really see how it could be in a wider stance. But pics can be deceiving.

I understand what you mean about the "dimples on the rim tabs". My rim tabs have no dimples. Just a square hole that the carriage bolt tabs into. This ensures a "flat fit" whether the rim tab is inside or outside the center disk.

I wonder if you might have to get "wheel spacers" to get those out wider. I'm sure your dealer can enlighten. This is how my rears are set.

View attachment 614156

 

[TexasBoy]

I understand what you mean about the "dimples on the rim tabs". My rim tabs have no dimples. Just a square hole that the carriage bolt tabs into. This ensures a "flat fit" whether the rim tab is inside or outside the center disk.

You are exactly right, the steel wheels have a flat surface on both sides of the rim tab so putting the tire on the outside is no problem. I have no idea why the cast setup is different. My dealer is gonna get the tires off and we are gonna see what we can do. Im gonna run over there and take some close up pics.

 

[oosik]

That's so very good to hear - TB. A dealer that willingly works with a customer to resolve this situation. Even filled with just air - your tires are heavy. If like mine - filled with RimGard - a good chance to get squashed like a bug. My tires filled with RimGard - over 1000# each. Not a situation I'm prepared to handle myself.

 

[Tx Jim]

Yrs back when I was employed by a JD dealer I changed wheel setting widths on many tractors. I own a M7040 with cast rear centers. I contemplated moving rear wheels out on my M7040 but decided it was too much trouble due to the fact that my tractors rear tires have liquid ballast. Tractors with the cast centers don't offer very many different wheel tread settings than I can envision

 

[Herkypilot]

I had mine adjusted out. Set in at the factory just seemed too narrow if you are dealing with any hills. Here are some pictures of mine with cast centers positioned out. It feels pretty stable in this setting.


HP

 

[TexasBoy]

I had mine adjusted out. Set in at the factory just seemed too narrow if you are dealing with any hills. Here are some pictures of mine with cast centers positioned out. It feels pretty stable in this setting.

HP

Thank you for posting that, this is exactly the width Im looking for.

 

[ovrszd]

And you can get one setting wider by placing the rims outside the centers. Guessing 3-4" wider.

 

[TexasBoy]

I had mine adjusted out. Set in at the factory just seemed too narrow if you are dealing with any hills. Here are some pictures of mine with cast centers positioned out. It feels pretty stable in this setting.[/ATTACH]

HP

Herkypilot, after looking at your pictures and going to the dealer today, we both have determined the only way to get the offset you have is to unmount the tire from the wheel and turn the R1 the other direction. All we can do for now is move the right outer rim (the part with the tab) over to the left center, and the left outer rim to the right center and mount them on the outside of the center. That did move it out about 2" or so on each side. The tabs themselves have a raised area where the carriage bolts go that will only allow the tabs to go one way. Here is a closeup of mine:




Once we get them both on I will post a picture from the back showing how far apart they end up.

 

[ovrszd]

By changing rims/tires side to side, don't you keep the bolt tabs at the head of the bolts where they belong?

So, setup with the rims on the inside of the centers. Standing at the rear of the tractor looking forward. Right side rim has the flat area to the right, clamped against the left side of the center. Now move that rim to the left side of the tractor and on the outside of the center. Now the flat surface is clamped against the flat surface of the center. Bingo, or yahtzee, or whatever you prefer.

 

[Tx Jim]

By changing rims/tires side to side, don't you keep the bolt tabs at the head of the bolts where they belong?

So, setup with the rims on the inside of the centers. Standing at the rear of the tractor looking forward. Right side rim has the flat area to the right, clamped against the left side of the center. Now move that rim to the left side of the tractor and on the outside of the center. Now the flat surface is clamped against the flat surface of the center. Bingo, or yahtzee, or whatever you prefer.

I agree. I think changing direction of tread on rear wheel is a waste of time & $$$$ as it will gain no different wheel tread widths

 

[Tx Jim]

I had mine adjusted out. Set in at the factory just seemed too narrow if you are dealing with any hills. Here are some pictures of mine with cast centers positioned out. It feels pretty stable in this setting.


HP

Aren't the valve stems now on the inside with wheels set wider?

 

[JWR]

I agree. I think changing direction of tread on rear wheel is a waste of time & $$$$ as it will gain no different wheel tread widths

Hey Tx Jim ! You misunderstood. Ovrszd did NOT suggest anything related to changing the direction of the tread (!) No one would ever put the tires on backwards and screw up traction, etc. What he said and meant was that in changing the tires with wheels from one side to the other of the tractor you can get a wider stance (if the wheels or attachment points were dished in instead of dished out.) Posts prior to Overszd's comment in post #17 had overlooked the possibility of swapping the wheels and tires left & right. That of course only helps if there is a dished-in vs dished-out aspect to the wheels and/or their connection points.