Tire question.

[tarawa]

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.

[MiCarl]

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.

[tarawa]

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.

[Glen]

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]

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

[Bob McCarty]

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

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

[SamsFarm]

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?

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!

[tst]

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

[Cubfriend]

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!

[tarawa]

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]

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?

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.

[Glen]

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]

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!

[tarawa]

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]

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.