New Tractor came with 13.6x28R1 instead of 14.9x26R1 like online website shows. Why?

[MechanicalGuy]

Dealer couldn't tell me either. The MX5200's on his lot had the 14.9x26's...mine came with 13.6x28. I don't understand why there would be two completely different sizes of ag tires. Dealer couldn't say why.

 

[RickB]

And he was too busy to check the order against the invoice or pick up the phone and ask Kubota? It really is not hard to get a question like that answered. I’d rather have the 28s anyway. 26 inch R1 tires are a ******* size.

 

[MechanicalGuy]

I asked a different dealer than I bought it from. He did check on his computer and see where both sizes were listed, but he had no idea why or what came with what.

 

[RickB]

I haven’t taken time to look at tire data but I would wager a nice lunch that either size rear would match up with the same front tire.

 

[ovrszd]

I haven’t taken time to look at tire data but I would wager a nice lunch that either size rear would match up with the same front tire.

Yep. Sounds like they install whichever they have a train carload of at the time.

 

[LouNY]

Those two sizes are almost identical in height and the static loaded radius for both is 24".

 

[MechanicalGuy]

I haven稚 taken time to look at tire data but I would wager a nice lunch that either size rear would match up with the same front tire.

They did but I don't understand why.

 

[MechanicalGuy]

Those two sizes are almost identical in height and the static loaded radius for both is 24".

The width is noticeably different.

 

[MechanicalGuy]

Yep. Sounds like they install whichever they have a train carload of at the time.

I wonder if the tires and wheels are made in the United States and don't ship with the tractor.

 

[rScotty]

Those two sizes are almost identical in height and the static loaded radius for both is 24".

The only tire spec that matters when choosing between two tires is matching the loaded rolling circumference of the tires Front to Rear to the internal gear ratio F to R.
And that only matters if it is 4wd.
Having tires the same in height and static loader radius is a strong indication that the specs are going in the right direction, but not conclusive.
Regardless, any dealer should be able to answer all your questions on this..... but few I've encountered take the trouble. His shop foreman will probably know.
rScotty

 

[Zebrafive]

I too, would rather have 28" than 26" tires.

 

[MechanicalGuy]

I too, would rather have 28" than 26" tires.

Well I'm happy then!

I'm just dumbfounded about it because I've never seen that size on the mx.

 

[Texasmark]

Bransons are shipped without tires and wheels and tractor comes in as "tractor parts" for reduced import taxes to name one reason. Going to the Rome, GA. main office, and mapping the location, you can see piles and piles of tires sitting around to be installed.

The sales brochure for my 6530 shows R1W (water) tires installed.....for rice patties in S. Korea. Mine had Titan R1 tires and wheels both made and installed in the US. I don't know the size of the Korean installed tires for local sales vs the US market Titans. May be differences due to the deep tread lugs. At any rate, the fronts have to meet the rolling circumference of the rears so that has to be taken into consideration since they are 4wd. vehicles.

 

[crazyal]

Besides width there's also volume. If you load the tires you will get more weight in the 14.9x26.

 

[rScotty]

Besides width there's also volume. If you load the tires you will get more weight in the 14.9x26.

I haven't done the arithmetic. How much more? Is it significant?
But thinking about loading tires reminds me just how local that practice of loading tires is. Around here nobody ever loads their tires. The ground here is hard, sandy and steep, so no advantage.
Go 100 miles in either direction where the soil has more clay in it and everyone loads their tires. I've heard that some sort of sugar beet juice is a popular liquid for the purpose.
rScotty

 

[LouNY]

Using a rim guard chart;
13.6x28 = 43 gallons or 460 pounds,
14.9x26 = 48 gallons or 514 pounds.
This is at 75% fill.
link for pdf file,
https://www.google.com/url?sa=t&rct...illChart.pdf&usg=AOvVaw35EAKm03yyRDrQXHDvxJt_

 

[ovrszd]

I haven't done the arithmetic. How much more? Is it significant?
But thinking about loading tires reminds me just how local that practice of loading tires is. Around here nobody ever loads their tires. The ground here is hard, sandy and steep, so no advantage.
Go 100 miles in either direction where the soil has more clay in it and everyone loads their tires. I've heard that some sort of sugar beet juice is a popular liquid for the purpose.
rScotty

Here's a link to a handy chart provided by one of our Sponsors, Messicks.

Liquid Tire Ballast Chart

 

[crazyal]

Over 100lbs. For that size tractor with ag tires I would want as much weight as I could get.

 

[RickB]

110 lbs is insignificant and can easily be made up with a cast iron weight on each wheel if the OP is losing sleep over it.
My reason for preferring the 28” tires comes at replacement time. Historically 13.6x28 tires are more affordable and far easier to find than 14.9x26. In almost all operating conditions there will not be a noticeable performance difference between the sizes.

 

[Texasmark]

I wonder if the tires and wheels are made in the United States and don't ship with the tractor.

My 6530 had Titans, tires and wheels made in the USA. The 2400 came in with Korean tires. Doing a Google map of Rome Ga. home of Branson USA, you can see piles of tires and wheels stacked in their yard. One thing I read is that some tractors come in without such and come in as "tractor parts" since they aren't really a tractor without tires and wheels....lower tariffs.