Replacing back tires - Farmall Super A

[[email protected]]

I have a Farmall Super A that i am replacing a ripped up back tire on. The other back is still good, but somewhat worn. I don't want to mess up the differential. Can i replace just the bad tire or should i replace both? thank you for your advice. -Peter

 

[Mrfred54]

As long as its the same size it should be ok

 

[rustred]

How were u figuring it round mess up the differential. We
were never allowed to call it a reared in class . Not going
to hurt a thing. Look at them wheel barrow tires that
come with new cars. They are 2 inches lower. The spider
gears and axle gears compensate for the different size
tires. What do u think is going on inside there when
youre stuck and have one wheel spinning 80 mph. Thats
when its not good and would do damage.

 

[Janicholson]

Correct! Plowing with one wheel in the furrow almost always had one slipping more than the other. Jim

 

[used red MN]

Hello Peter welcome to YT! If you plan on doing a lot of tractor drives it may put an
ever so minute amount of additional wear on the
differential. Otherwise puttering around a field pulling
this or that the additional wear will be unmeasurable.
Either way it will not hurt a thing.

Edit to add a proper welcome to a new member.

This post was edited by used red MN on 06/29/2023 at 04:48 pm.

 

[khouse6]

if you are using a machine that has positive traction, it may cause a problem. otherwise. should be o kay

 

[caterpillar guy]

Change it and don't worry about it. Your not going to be working it at maximum output 12-16 hours a day plowing or doing heavy tillage with it nor driving hundreds of miles. The spider gears are for the differences in tire wear and tractive differences in the field. As long as you stay with the same size run it. IF you are going to change them your self leave the rim on the tractor it is easier and less work.The rim will hold still that way. Get a couple or 3 good tire spoons and go to work. Ken Tool are some of the best . They will cost you in the 30-50 dollar range each but worth it. Just a couple spoons with wor without curved ends will work fine. I have one with a curve and a couple straight. I also have another one with a gooseneck like in the one end. I use it mostly on truck tires.

 

[Brownie450]

In addition to what Cat guy said, 2 pairs of
vise-grips will help the removal & putting
the tires back on.
Jim

 

[[email protected]]

Thank you everyone for your insight, one tire it is! And i appreciate the tips on putting the new tire on. Yes, we left the rim on, just cut off the old tire and cleaned the rim up. The vice grips are a great tip, thank you!

 

[BarnyardEngineering]

It's different on a car or truck because of the speeds involved. You want to keep the tires the same size and the same wear level on driven axles on a car or truck because you're frequently traveling at high speeds over long distances.

On a tractor it's not so much an issue because the speeds involved are so slow and the tire sizes are so large. An inch difference in diameter has a much larger effect on a small car/truck tire than it does on a large tractor tire.

Yes yes, I've heard it many times before, "That's what a differential is for." A differential is for going around corners and compensating for curves in the road. It's not designed to ALWAYS be turning at HIGH SPEED. You will burn up your differential if you run two different sized tires on your car or truck long enough. Don't believe me? Try it.

This post was edited by BarnyardEngineering on 06/30/2023 at 06:33 am.

 

[Leroy]

But the owners manual will tell you not to put that small tire on a drive axle, it will say remove the tire from a non drive axle and put it in the drive axle with the flat and put that little tire on the non drive axle. Will mess up steering but not hurt the differential.

 

[caterpillar guy]

If you do do it yourself get a pail of that Murphy's mounting compound. IT will be the best tire tool you spent money on. Just wipe a small amount on each bead before putting on then grip wrench/vise grips on the rim. Helps with no letting the bead slip around the rim. Then onec the first bead is on put your tube in after you put some air in it. This is to help with making sure the stem is on the correct side of the tire. Once tucked in there carefully pry the second bead on not pinching the tube. Pinching leads to having a leak in a new tube. then inflate done.

 

[[email protected]]

I did buy a pail of Murphy's mounting compound, appreciate the tip on partially inflating the tube first, i can see how that would make flattening it easier and prevent folds and getting it into the right position. Thanks!

 

[BarnyardEngineering]

(quoted from post at 07:29:52 06/30/23) But the owners manual will tell you not to put that small tire on a drive axle, it will say remove the tire from a non drive axle and put it in the drive axle with the flat and put that little tire on the non drive axle. Will mess up steering but not hurt the differential.

That's because the know most people who change their own tires will probably not get it fixed immediately. The ones that call a tow truck will have it towed to the tire shop and end up buying 2 or 4 tires.

Assuming a donut spare here. Full size spare the point is moot.

Also moot on the cars that don't come with spares.

 

[kshansen]

Best use for those donut tires I have found is mounting a pair to the front rims of my BN I mow the lawn with the Woods mower! Plus I got a pair for free.

 

[BarnyardEngineering]

They work as spares too just to get you home or to the tire shop. Came out of church and the car had a flat. Donut spare was flat too but not quite as flat as the flat, and it got us home.

Cars have been coming with donut spares for over 40 years. Now cars don't come with spares at all.