Tires YM336D Tire Question

[tnrandy]

Hey Guys new here.

Just bought my first Yanmar tractor and it's a YM336D. So far so good. I will need to replace the tires real soon. It currently has turf tires, I'd rather have AG tires but someone said I'd have to change the wheels too.

The rear tires are 44x18.00-20NHS.All I could find on the front is 13-32.

Here are my questions..

What other size tires can I use on the rear wheels? I tried to find some rear tires the same size but that looks limited.

Do you know what size the front are?

If I want to put on AG tires, where can I get wheels to fit and what size do they need to be?

Thanks!

 

[Scotty Dive]

PM me your email address....I have a brochure on the YM 276/ YM 336 with the original tire specs

It lists for the YM 336D:
AGS
Front 8-16
Rear 12.4-28
Turfs
Front 8-16
Rear 13.6-28

 

[California]

Some models of Yanmar had different ratios in the differentials or transmission depending on which tires were fitted. I suggest research this for your model before buying the tires/wheels.

 

[tnrandy]

I'd be interested in hearing what size wheels/tires other 336d owners have?
Thanks

 

[Domush]

On my 336D:

Front: 7.50R16
Rear: 12.4/11-28

What those mean, I have no idea. They are different brands of tires from front to rear, so you may need to convert one set of numbers.

They are ag tires, BTW.

 

[Car Doc]

On my 3810D (same chassis as 336) it came with new 14.9x24 R1 (instead of the 12.4x28 it was supposed to have) and 7x16 (well worn) ricers.

I recently put new 8x16 R1 on front and the ratio works out mathematically with the stock tire sizes, these are a tiny bit larger diameter than stock and +3.45% was the ratio if memory serves fwtw. ymmv as always and yes new wheels will be necessary!

 

[kenmac]

MY 336 manual list front 8x16 R1 rear 12.4x11 R1... Mine came front 7x16 rear 12.4x11x28

 

[tnrandy]

Can someone help me locate some wheels that will accommodate AG tires? Looks like I can buy new front wheels, but I can not find any rear ones. Is there any other tractor wheels that will interchange with Yanmar?
Thanks

 

[Domush]

Can you post a picture of your current tires? I've never seen non-ag tires on a 336

 

[tnrandy]

Not a great picture, but only one I have right now. I just bought it last week. I really need some AG wheels, anybody??

 

[Car Doc]

Not a great picture, but only one I have right now. I just bought it last week. I really need some AG wheels, anybody??
View attachment 271101

I may be wrong but the offset ft to back looks wrong to me the back looks too small in comparison to ft so I wonder how much bind is in it now if any?

 

[tnrandy]

no bind that I've noticed. I've used the 4wd several times already and it's smooth. The man I bought it from said he'd owned it 7 or 8 years and those are the tires that came on it then. He said he used the tractor a lot and never had any problem with the 4wd. I don't like the look of the turf tire so I want to get rid of them and get some AGs.

 

[Gypsyman]

Try Bryan at West Kentucky Tractor Parts or Anna at Southern Global. I've had good luck with both.

 

[tnrandy]

OK, here's what I found. My rear wheels are 8 bolt, instead of the normal 6 bolt. I've looked at a lot of 336d pictures and haven't noticed any that are 8 bolt. I found wheels but all of them are 6 bolt. Looks like I'll just have to keep these turf wheels and put new tires on. Here's my next question. How do I determine the size my front tires need to be. The ones on there now are 28.9.0-14 and seem to work ok but when I looked this size up they show up as airplane tires????????? So I'll probably just buy some new wheels and tires for the front. Who can tell me how to figure out what size tire and wheel I need. The rear are 44x18.00-20.

 

[Car Doc]

I have seen similar sized JD tractors and they have 8 bolt wheels. Fact I was looking for wheel weights for my tractor and spent quite a bit of time looking at JD parts etc and that makes me wonder if what you have is JD bolt pattern and wheels???

Also wonder if your hub may still be drilled for 6 bolt and someone just re-drilled it to fit the 8 bolt wheels stranger things have been known to exist!

If so the problem could surely be as simple as calling Abilene machine in Abilene Kansas and see if they had a set of used JD ag wheels for say a 950 or 1050 those are similar Yanmar built machines. hth

 

[Gjamtrac]

OK, here's what I found. My rear wheels are 8 bolt, instead of the normal 6 bolt. I've looked at a lot of 336d pictures and haven't noticed any that are 8 bolt. I found wheels but all of them are 6 bolt. Looks like I'll just have to keep these turf wheels and put new tires on. Here's my next question. How do I determine the size my front tires need to be. The ones on there now are 28.9.0-14 and seem to work ok but when I looked this size up they show up as airplane tires????????? So I'll probably just buy some new wheels and tires for the front. Who can tell me how to figure out what size tire and wheel I need. The rear are 44x18.00-20.

When equiped with the "golf course tires" on the rear, Yanmar used 27 x 8.50-15 on the front. (27" is the O.D; 8.50" is the width, and
15" is the wheel diameter).
Yanmar switched from 6 bolt rear hubs to 8 bolt about 1984. I have two YM336Ds; a 1986 and a 1991 and both have 8 bolt.
I can have wheels made for your tractor so you can switch to ag tires.
I will pm you about this.

 

[Domush]

The 8-bolt pattern means it is a later year 336. Yanmar changed the pattern mid way into the series. Mine is a 1981, so it still has the 6 bolt pattern. Anything after Serial #41770 was 8 lug.

Also, the hubs are removable, which means you can simply swap the hubs between the different rims. The same hubs are used on the ag rim as the turf rim, so moving between the two will be easy(ish).

Sorry i didn't post this earlier. It just occurred to me about the removable hubs.

 

[Car Doc]

The 8-bolt pattern means it is a later year 336. Yanmar changed the pattern mid way into the series. Mine is a 1981, so it still has the 6 bolt pattern. Anything after Serial #41770 was 8 lug.

Also, the hubs are removable, which means you can simply swap the hubs between the different rims. The same hubs are used on the ag rim as the turf rim, so moving between the two will be easy(ish).

Sorry i didn't post this earlier. It just occurred to me about the removable hubs.

Do you mean the wheel center or axle hub? Because thats what I took the other guy to mean that he can make wheels to fit his centers..

 

[Domush]

Yanmar calls the center of the rim itself a hub. That is the part I'm referring to. The part which bolts to the outer ring of the rim and also bolts to the axle.

Sent from my SCH-I500 using TractorByNet

 

[Car Doc]

That's what I kinda gathered just wanted to follow the terminology thats being used. I learned to never go past a word thats misunderstood the whole conversation or lesson is lost at that point.

In reality Yanmar calls the hub a hub on the end of the axle the part thats on the axle that has the bolts. And they call the center the wheel (thats where I am off track) and the outer part with the tire is called a rim now granted thats my 336 manual its been know to be off here and there.