[LZBASSTRD]

I have an X320 with rear tire size 22x11 - 10" rim. Got a nice puncture in the sidewall. Anyway, I'm having some difficulty with trying to find an inner tube. JD dealer says that the tube for that tire is a 20x8 - 10" rim. Seems like a long way to stretch, if you ask me, but I bought it. Well now the tire, with the tube, has a different profile than the non-tubed tire.

The tubed tire has more of a rounded shape to the tread. The non-tubed tire tread is flat. So even if I get another tube for the other tire, then both tires wont have as much contact with the ground. Not that big a deal for everyday mowing, but for slopes or for use on snow covered pavement could be a problem.

Anyone else run into this? Should I try an find an ATV inner tube of the correct size? Even the parts breakdown, for my tractor, lists the inner tube as part number M150317 which turns out to be a 20x8 - 10" rim.

 

[TUDOR]

What you're looking at is the unloaded portion of the tire. The loaded portion (in contact with the ground) should be the same on both.

As a check, park it on asphalt or concrete and measure from the ground up to the top of the rim. Bleed air from the higher one to match heights with the lower, then check the pressures.

Now that you have the tractor level, you can also level the deck and be sure that it's right. :ROF

 

[LZBASSTRD]

I did make the pressures equal. 10 psi each. As long as I get a good tire "footprint", like you were pointing out, then I'll be happy. I'll be puting a tube in both tires for peace of mind anyway.

I gotta tel you though, these tubes are not very thick. When inflated to fit this big tire, it is about as thick as a condom. Kind of surprised that the JD part number, for this tire, is so small.

 

[TUDOR]

:ROF

Did you ever blow up a truck inner tube for the kids at the swimming hole? Compare it to the actual size of the truck tire that it goes in.

They get BIG!

 

[Cementhead]

:ROF

Did you ever blow up a truck inner tube for the kids at the swimming hole? Compare it to the actual size of the truck tire that it goes in.

They get BIG!

Yep,just the other day I put a 4.80-4.00x8 tube in a 18-8.50x8 tire and have done similar for years without a problem.

 

[LZBASSTRD]

:ROF

Did you ever blow up a truck inner tube for the kids at the swimming hole? Compare it to the actual size of the truck tire that it goes in.

They get BIG!

Good point.

 

[coalminer16]

To save weight on tractor pulling we used very undersized tubes (hard to go tubeless as the rims were also wider then the tire so it flattened the tread out). You would be amazed how far they can stretch. It actually is less problematic to go undersize vs oversized as oversized can pinch, roll and tear on itself causing leaks as things shift and move with normal movement and even just airing up the tire.