Tire question.

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tarawa
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Tire question.

Postby tarawa » Tue Mar 23, 2021 5:54 pm

I have two new 8.3-24 rear tires. Tractor has 9.5-24. Will the 8.3 tires fit on the 9.5 rims? I don’t want to purchase new tires.

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MiCarl
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Re: Tire question.

Postby MiCarl » Tue Mar 23, 2021 6:01 pm

It comes down to rim width. The 8.3 fits a 7" rim, the 9.5 fits an 8" rim.

I wasn't aware that there was an 8" rim for the Cub. If someone previously installed 9.5s on a 7 inch rim you'll be just fine.

Having said all that my Cub came with 1 rim that was too wide (I think the rim was for an A) with an 8.3 tire. It had worked for the previous owner (parade tractor) but I switched the rim before I worked it. The 8.3 on an 8" rim causes the tread shape to change and the sidewalls to be shortened. I don't know how much that would have affected performance. I also don't know how much trouble someone had getting the bead up without pinching the tube.
1944 Farmall H
1948 Farmall Cub
1994 Speedex 1631

tarawa
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Garden Master G converted to diesel.
Old Yanmar Diesel
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Re: Tire question.

Postby tarawa » Tue Mar 23, 2021 7:05 pm

I may mow with mine a little but basically a lawn ornament. I see you have a Speedex. That was the first tractor that was on my wife and my wishlist. 45 odd years ago.

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Glen
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Re: Tire question.

Postby Glen » Tue Mar 23, 2021 7:34 pm

Hi,
The 7" wide rear rims were the widest that IH used on Cubs, the Cub parts manual says.

They used the 8.3" x 24" and the 9.5" x 24" rear tires on the 7" rim, the manual shows.

Below is a page from the Cub parts manual showing the rims.
It is at the 3rd number 3 in the description, on the left side of the page. :)

http://www.farmallcub.info/manuals/cub_ ... 015-03.jpg

tarawa
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Tractors Owned: Farmall Cub
Garden Master G converted to diesel.
Old Yanmar Diesel
Location: Loxahatchee, Fl.

Re: Tire question.

Postby tarawa » Tue Mar 23, 2021 11:07 pm

My cub has 15 inch front wheels. Standard rear wheels.

Bob McCarty
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Re: Tire question.

Postby Bob McCarty » Wed Mar 24, 2021 9:06 am

tarawa wrote:My cub has 15 inch front wheels. Standard rear wheels.

Fronts are normally 12", while the 15" were used on the high crop version.
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we need to think differently."
-Albert Einstein

SamsFarm
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Re: Tire question.

Postby SamsFarm » Wed Mar 24, 2021 1:18 pm

Bob McCarty wrote:Fronts are normally 12", while the 15" were used on the high crop version.


The 15" was also on the cub lowboy highway mower setup....... Right?

tarawa wrote:My cub has 15 inch front wheels. Standard rear wheels.


Tarawa, is your tractor a lowboy?

What is wrong with the 9.5's?

Of coarse, over the years someone could have slapped on 15's for their own reasons!
1968 Cub fast hitch

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Re: Tire question.

Postby tst » Wed Mar 24, 2021 4:53 pm

to your question is yes 8.3 & 9.5 will interchange on the rim you have

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Re: Tire question.

Postby Cubfriend » Wed Mar 24, 2021 5:47 pm

tarawa wrote:My cub has 15 inch front wheels. Standard rear wheels.


I noticed that you had 15” fronts about 1.5 - 2 years ago when you posted a picture. They look good!
Frank

tarawa
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Re: Tire question.

Postby tarawa » Wed Mar 24, 2021 8:45 pm

Cubfriend wrote:
tarawa wrote:My cub has 15 inch front wheels. Standard rear wheels.


I noticed that you had 15” fronts about 1.5 - 2 years ago when you posted a picture. They look good!


Yep, they still look good. I got one of the new 8.3-24 tires mounted today. No problems at all..... just cost a bit to get it mounted. I will take a picture when I get everything together...including the correct radiator this time.

tarawa
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Tractors Owned: Farmall Cub
Garden Master G converted to diesel.
Old Yanmar Diesel
Location: Loxahatchee, Fl.

Re: Tire question.

Postby tarawa » Wed Mar 24, 2021 8:48 pm

SamsFarm wrote:
Bob McCarty wrote:Fronts are normally 12", while the 15" were used on the high crop version.


The 15" was also on the cub lowboy highway mower setup....... Right?

tarawa wrote:My cub has 15 inch front wheels. Standard rear wheels.


Tarawa, is your tractor a lowboy?

What is wrong with the 9.5's?

Of coarse, over the years someone could have slapped on 15's for their own reasons!


It is not a lowboy. The 9.5-24s seemed big to me for my wife’s toy. It is a south Florida tractor so maybe someone wanted more of a high crop tractor.

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Glen
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Re: Tire question.

Postby Glen » Wed Mar 24, 2021 9:12 pm

Hi,
The 15" front wheels were an option.

When mounting new tires with tubes, after you inflate them, it is good to take out the valve core, and let it deflate fully, all air that will come out, then inflate it again.
When inflated the first time, the tube can get caught in the wrong positions in the tire, that can make folds in the tube. The tube can eventually fail where the folds are.

Deflating it helps the tube straighten out in the tire.
I think you could turn the wheel some too, when it's deflated, the tube would move around in the tire.
Be sure the nut is on the valve stem for the rear tires, don't lose the valve in the wheel when it is deflated.
For tires with no nut on the valve stem, be careful to not lose the valve in the wheel when it is deflated.

Rear Cub tires are low pressure. 12 psi is usually enough, unless you are carrying heavy loads on the rear of the Cub.

Below is a page from the 1965 Cub operator's manual, showing rear tire inflation pressures.

http://farmallcub.com/rudi_cub/www.clea ... age-50.jpg

This page below shows front tire pressures. My Cub steers easier having 30 or more psi in the front tires. Your tires probably need to be good to use the higher pressures. :)

http://farmallcub.com/rudi_cub/www.clea ... age-49.jpg

SamsFarm
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Posts: 1276
Joined: Wed Jan 20, 2021 8:21 pm
Zip Code: 44410
Tractors Owned: 1968 Cub Fast Hitch
LF-1 Platform Carrier
144 Cultivators
L-F194 Plow(s)
F38 Disk
L-F3 Spring Tooth Harrow
Fast Hitch CS Bell 60 Grain Mill
Home Made Fast Hitch Potato Plow
54A Blade

Couple 1948 Cubs
172 Runner Planter
53 Fertilizer
Cub-3 Field Cultivator
Cub-189 Two Way Plow
Cub-22 Sickle Bar Mower
Mechanical Transplanter with side mount barrel (needs a fast hitch adapter) :)

Misc Belly Mowers

Wish List
International 100 Fast Hitch Blade
Mott Fast Hitch Flail Mower

Wish Wish Wish List
Fast Hitch Rotary Hoe
4E hammer mill
Location: Ne Ohio

Re: Tire question.

Postby SamsFarm » Wed Mar 24, 2021 9:38 pm

tarawa wrote:
It is not a lowboy. The 9.5-24s seemed big to me for my wife’s toy. It is a south Florida tractor so maybe someone wanted more of a high crop tractor.


My 68 cub came with 9.5's. It has 8.3's now, but only because I had them from another tractor and the tread is barely wore.

My old 9.5's, one tire was considerably wore (almost bald with a flat spot), and the other is not too bad, (maybe 40% tread left). Someone let them spin..... A lot! :(

I guess its your personal preference! Enjoy! :)
1968 Cub fast hitch

tarawa
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Posts: 91
Joined: Sun Mar 04, 2018 9:28 pm
Zip Code: 33470
Tractors Owned: Farmall Cub
Garden Master G converted to diesel.
Old Yanmar Diesel
Location: Loxahatchee, Fl.

Re: Tire question.

Postby tarawa » Wed Mar 24, 2021 10:02 pm

Glen wrote:Hi,
The 15" front wheels were an option.

When mounting new tires with tubes, after you inflate them, it is good to take out the valve core, and let it deflate fully, all air that will come out, then inflate it again.
When inflated the first time, the tube can get caught in the wrong positions in the tire, that can make folds in the tube. The tube can eventually fail where the folds are.

Deflating it helps the tube straighten out in the tire.
I think you could turn the wheel some too, when it's deflated, the tube would move around in the tire.
Be sure the nut is on the valve stem for the rear tires, don't lose the valve in the wheel when it is deflated.
For tires with no nut on the valve stem, be careful to not lose the valve in the wheel when it is deflated.

Rear Cub tires are low pressure. 12 psi is usually enough, unless you are carrying heavy loads on the rear of the Cub.

Below is a page from the 1965 Cub operator's manual, showing rear tire inflation pressures.

http://farmallcub.com/rudi_cub/www.clea ... age-50.jpg

This page below shows front tire pressures. My Cub steers easier having 30 or more psi in the front tires. Your tires probably need to be good to use the higher pressures. :)

http://farmallcub.com/rudi_cub/www.clea ... age-49.jpg



I had a farm/commercial tire place mount the tires. At 67 years old, I didn’t want to tackle it. Hopefully they know what they are doing. I will set the pressure correctly after I get them on the tractor.

Clemsonfor
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Re: Tire question.

Postby Clemsonfor » Wed Mar 24, 2021 11:10 pm

tarawa wrote:
Glen wrote:Hi,
The 15" front wheels were an option.

When mounting new tires with tubes, after you inflate them, it is good to take out the valve core, and let it deflate fully, all air that will come out, then inflate it again.
When inflated the first time, the tube can get caught in the wrong positions in the tire, that can make folds in the tube. The tube can eventually fail where the folds are.

Deflating it helps the tube straighten out in the tire.
I think you could turn the wheel some too, when it's deflated, the tube would move around in the tire.
Be sure the nut is on the valve stem for the rear tires, don't lose the valve in the wheel when it is deflated.
For tires with no nut on the valve stem, be careful to not lose the valve in the wheel when it is deflated.

Rear Cub tires are low pressure. 12 psi is usually enough, unless you are carrying heavy loads on the rear of the Cub.

Below is a page from the 1965 Cub operator's manual, showing rear tire inflation pressures.

http://farmallcub.com/rudi_cub/www.clea ... age-50.jpg

This page below shows front tire pressures. My Cub steers easier having 30 or more psi in the front tires. Your tires probably need to be good to use the higher pressures. :)

http://farmallcub.com/rudi_cub/www.clea ... age-49.jpg



I had a farm/commercial tire place mount the tires. At 67 years old, I didn’t want to tackle it. Hopefully they know what they are doing. I will set the pressure correctly after I get them on the tractor.

I was over 30 years younger than that when I had new tubes put in my Yanmar so that I could fill them. For the $30 they charged me to put them in it wasn't worth my time to try to do it myself.


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