Wider front tires M7040 Kubota

[Turkeyman]

Canadian sold M7040/7060 come with 320x20 tires which is a 12.4 x 20 tire. This is not an option in the USA, so I looked into doing it on my own, the cost was $2800 mostly due to the rims. This is the biggest reason I would not buy this tractor. The rear tires stays the same.

11.2 x24 is too tall and will damage the axel/trans once the tractor gets 800 or so hrs on it. I needed the floatation bigger front tires give.

 

[foreman Etexas]

I'm pushing 750hrs with the larger tires will see,almost to the 800hr mark.

 

[5030]

I'm pushing 750hrs with the larger tires will see,almost to the 800hr mark.

Almost time for an oil change....lol

 

[foreman Etexas]

Almost time for an oil change....lol

You are correct every 100hrs,not to worried about the tire thing.

 

[Turkeyman]

If Kubota thought they could put bigger tires on the tractor don't you think they would do it from the factory?
I met one of their engineers at a dealership when I was looking at the 7040 and spoke of bigger tires on the front and his suggestion - get the 8540. You will have problems it is just a matter of time if you exceed the 5% difference in the rolling circumference.

 

[KenBike]

If Kubota thought they could put bigger tires on the tractor don't you think they would do it from the factory?
I met one of their engineers at a dealership when I was looking at the 7040 and spoke of bigger tires on the front and his suggestion - get the 8540. You will have problems it is just a matter of time if you exceed the 5% difference in the rolling circumference.

I agree that is why I am getting the wider tire with the same diameter as the stock 9.5 24. Do you think Kubota would sell a wider front tire in Canada just to tear the front axel up?

 

[Turkeyman]

No, I do not think Kubota would sell a wider front tire in Canada just to tear the front axel up. The 12.2 x20 is same rolling circumference as the 9.5 x 24. I wish it was a option here in the USA.

 

[KenBike]

I found Miller tire who has a ad on the site can supply tires and rims in the wider size. They have a manufacturer custom build the rims in about 3weeks after order. If all goes ok should have the new setup by early December.

 

[arrow]

NO!!! In 4WD you either have lead or lag. Lead is the front turning further than the back and lag is when they turn less. It is ok for the front to "pull" along faster than the rear, but to have them slower you create quite a bind on the drivetrain. The front even in vehicles will usually have lead. When turning, the front tires have to travel farther anyway. So if they were set at the exact same, you would bind the drivetrain anytime you turned.

I think Gary understands this. He is simply making a statement that more revolutions and added drive train engagement cause a bit more wear for which he is absolutely correct.

 

[PoorPlowboy]

Which tire is Miller offering you in 12.2-20 and price? I'm not finding anything close on their site and the 9.5 cookie cutters have got to go. They're tearing my place up and starting to really irritate me.