I have a set of 16.9 x 38 tires that I need to mount up. I was pricing some tubes at a local tractor parts store and they told me they are using the 14.9 x 38 tube in these larger tires in order to prevent folding of the tube. Anyone ever hear of this before? I would be concerned that the smaller tube wouldn't be able to expand that far. Leave some feedback. Thanks.
- Thread starter Cjet
- Start date
BarnyardEngineering
Well-known Member
- Location
- Rochester, NY
When you inflate these tire tubes for pool/pond/river floats, they expand way bigger than they ever would in a tire.
Personally if I had a 14.9 tube on hand and needed to put a tube in a 16.9 tire, I would use the tube I had rather than go out and buy one.
Personally if I had a 14.9 tube on hand and needed to put a tube in a 16.9 tire, I would use the tube I had rather than go out and buy one.
David Snipes
Member
If they properly install the proper tube side, there should be no folds. They may not want to take the time to do it right.
David Snipes
Member
Meant to say size.
caterpillar guy
Well-known Member
I'ts not just the expansion it is the tire is a much bigger taller tire than the 14.9 is from the rim to the tread carcass. Not like going from a 13.6 to a 14.9. After the 14.9 the ballooning of the tire is much bigger. I think you need a different tire guy. I've not seen folding or wrinkling in tubes in tires of the correct size unless these new tubes are not made for the size of the tire. I bought new tubes for some tires in the last year or so so not like I had not bought any tubes for 10 years or more. If mounting use tires I would just put the old tubes back in if not something seriously the matter with them.
DoubleO7
Well-known Member
- Location
- Crystal River, FL
ttps://firestonetubes.com/[/url]
Then lookup the size you need.
There are at least five different series that they make.
Imported
USA made
Deluxe
Natural Rubber
Forestry
Note the different weights of each as the same size varies quite a bit. More weight is thicker rubber.
Ultradog MN
Well-known Member
- Location
- Twin Cities
I had a set of junk 14.9x30 tires I wanted to
mount just to make the tractor I was fixing
up moveable.
Only tubes I had were for 13.6x28 tires.
I put them in and aired them up.
Had to stretch them over the rims to get them
on.
Well, you know how it goes, now the tractor
rolls so let's see if it will do any useful
work.
Those tires held air and did quite a bit of
mowing till I put new tires and tubes on a
year and a half later.
My old pal Kenny and I still laugh about
them.
We call them the condom tires as those small
tubes were probably stretched pretty thin.
mount just to make the tractor I was fixing
up moveable.
Only tubes I had were for 13.6x28 tires.
I put them in and aired them up.
Had to stretch them over the rims to get them
on.
Well, you know how it goes, now the tractor
rolls so let's see if it will do any useful
work.
Those tires held air and did quite a bit of
mowing till I put new tires and tubes on a
year and a half later.
My old pal Kenny and I still laugh about
them.
We call them the condom tires as those small
tubes were probably stretched pretty thin.
J.Wondergem
Well-known Member
- Location
- Rockford, Mi.
I've done that in my road tractor in the 60's. You sure don't want folds in the tubes.
Please tell us you are NOT going to do
that. I owned a farm tire shop for 22+
years. If you put a smaller tube in your
tire, especially if it is cheap tube, you
risk the seam of the tube splitting. When
that happens, the tube is junk. Get
yourself Firestone tubes. They are far
better than the cheap tubes. If you have
some talcum powder. Coat the inside of the
tire with it. It will allow the tube to
slip around inside the tire. Once the tire
pops out on the rim, let the air out of
the tube and then reinflate. You should
be ok.
that. I owned a farm tire shop for 22+
years. If you put a smaller tube in your
tire, especially if it is cheap tube, you
risk the seam of the tube splitting. When
that happens, the tube is junk. Get
yourself Firestone tubes. They are far
better than the cheap tubes. If you have
some talcum powder. Coat the inside of the
tire with it. It will allow the tube to
slip around inside the tire. Once the tire
pops out on the rim, let the air out of
the tube and then reinflate. You should
be ok.
BarnyardEngineering
Well-known Member
- Location
- Rochester, NY
hd6tom, have you ever done it yourself and had the tube split, or have you always toed the line and gone by the manufacturers' recommendations?
They don't make a 16.9x38 tube. Any tube you get for a 16.9 is labeled 16.9/18.4x38, so either the tube is oversized for the 16.9 OR the tube is undersize for the 18.4. I suspect the tubes are undersized for the 18.4, the way companies are with their penny-pinching...
So, that means that literally every tubed 18.4x38 tire has an "overstretched" tube in it, but that's okay...
They don't make a 16.9x38 tube. Any tube you get for a 16.9 is labeled 16.9/18.4x38, so either the tube is oversized for the 16.9 OR the tube is undersize for the 18.4. I suspect the tubes are undersized for the 18.4, the way companies are with their penny-pinching...
So, that means that literally every tubed 18.4x38 tire has an "overstretched" tube in it, but that's okay...
DoubleO7
Well-known Member
- Location
- Crystal River, FL
Firestone list several of their tubes as suitable for several tire sizes.
They even list one tube as suitable for FOUR different widths.
And a few as suitable for tow different rim diameters.
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